My assignment for this subject required learners to discuss abnormal psychology based on three different textbooks. This is the list given by my e-tutor on the forum.
https://open.umn.edu/opentextbooks/textbooks/890
https://issuu.com/search?q=abnormal%20psychology
Even without Google, learners could actually access textbooks in e-book format using the digital library link in the portal. Using proper keywords, learners could find thousands of journals, articles, media and like I said, ebooks from the library. The digital library even has a feature that allows you to store your search results online, which I will put in another post.
Minci-'PSI'chology 