Guide to Buddhist Philosophy.
By K.K. Inada [et al].
G.K. Hall, c1985.
The guide provides annotated entries to more than 1,000 primary and secondary sources on Buddhist doctrines and philosophy. The majority of the works included are written in English. There are detailed subject and author/title indexes.
The online version is available on the Internet Archive, a trusted source, but one for which it is necessary to create a free account and login.