Q. How do I cite a subject guide in APA?
To cite a webpage (like a LibGuide) using APA, follow the guidelines from Purdue OWL (https://owl.english.purdue.edu/owl/resource/560/10/) under the heading "Nonperiodical Web Document or Report"
You could also use the Citation Machine cite to create an APA citation from a website: http://www.citationmachine.net/apa/cite-a-website/manual
You may want to check with your professor to see if a LibGuide would be considered a Nonperiodical Web Document or more like a Wiki, just be be sure it's right.
I hope this helps!