diff --git a/projects/gpp/gpp.md b/projects/gpp/gpp.md
index 771a49c..1cff982 100644
--- a/projects/gpp/gpp.md
+++ b/projects/gpp/gpp.md
@@ -139,17 +139,17 @@ To make place for code turns to be a necessary act of care in the process of sha
 
 ## References
 
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+-   Chun W., Soon W., Wardrip-Fruin N., Zhu J. (2022). _Software Studies, Revisited | Computational Culture._ `[online]` Available at: [http://computationalculture.net/software-studies-revisited/](http://computationalculture.net/software-studies-revisited/) [Accessed 9 Oct. 2022].
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--   Karaya‌nni M. (2021). _Read The Feminist Manifesto_. `[online]` Available at: https://psaroskalazines.gr/pdf/rtfm_zine_screen.pdf.
+-   Karaya‌nni M. (2021). _Read The Feminist Manifesto_. `[online]` Available at: [https://psaroskalazines.gr/pdf/rtfm_zine_screen.pdf](https://psaroskalazines.gr/pdf/rtfm_zine_screen.pdf).
 -   Law, J. and Mol, A. (2002). _Complexities social studies of knowledge practices_. Durham: Duke University Press.
--   Li, J. (2020). _Where Did Software Go Wrong?_. `[online]` Available at: https://blog.jse.li/posts/software/ [Accessed 10 Nov. 2022].
--   Pipkin, E. (2022). _Open source, experimental, and tiny tools roundup_. `[online]` GitHub. Available at: https://github.com/everestpipkin/tools-list [Accessed 18 Nov. 2022].
--   Procida, D. (2017). _Diátaxis Documentation Framework_. `[online]` diataxis.fr. Available at: diataxis.fr [Accessed 18 Nov. 2022].
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+-   Li, J. (2020). _Where Did Software Go Wrong?_. `[online]` Available at: [https://blog.jse.li/posts/software/](https://blog.jse.li/posts/software/) [Accessed 10 Nov. 2022].
+-   Pipkin, E. (2022). _Open source, experimental, and tiny tools roundup_. `[online]` GitHub. Available at: [https://github.com/everestpipkin/tools-list](https://github.com/everestpipkin/tools-list) [Accessed 18 Nov. 2022].
+-   Procida, D. (2017). _Diátaxis Documentation Framework_. `[online]` diataxis.fr. Available at: [diataxis.fr](diataxis.fr) [Accessed 18 Nov. 2022].
+-   Shirky, C. (2004). _Shirky: Situated Software_. `[online]` Available at: [https://www.gwern.net/docs/technology/2004-03-30-shirky-situatedsoftware.html](https://www.gwern.net/docs/technology/2004-03-30-shirky-situatedsoftware.html) [Accessed 11 Oct. 2022].
 -   Ullman, E. (2013). Close to the machine: Technophilia and its Discontents. London: Pushkin Press
 
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