AP Calc AB
Master The AP Calculus AB & BC Petersons
Cracking the AP Calculus AB Exam, 2016 Edition Princeton
Economics
Cracking the AP Economics Macro & Micro Exams, 2016 Princeton
Barrons AP Microeconomics/Macroeconomics
AP English Language
Cliffnotes AP English Language & Composition
Cracking the AP English Language & Composition 2016 Princeton
AP World History
Cracking the AP World History Exam, 2016 Princeton
Barrons AP World History Exam
If you have any more suggestions just for these subjects, just comment below 
Name more AP Subjects + AP books too to help a friend out, as well xD
Check this out:
http://www.ivyplanners.com/documents/AP_StudyGuide-IvyPlanners.pdf
Best info for what prep books to get for each AP class.
Isn’t that list outdated if formats of some AP tests were changed?
Ap environmental science- princeton review & 5 steps to a 5
Ap micro/macro- 5 steps to a 5
Ap Biology- Cliffnotes
Ap government & politics- Barrons
AP Language and Comp -Princeton Review
AP Human Geo - Crash Course
AP World History - CRASH COURSE (There are videos online as well, and getafive.com is an AMAZING source)
AP Macro/Micro Econ - 5 Steps to a 5
I found this to be the most informative book that was most tailored to the exam format and style, along with the perfect amount of material. (I found Barron’s went far too in-depth)