Pearson, a household name in the education and training markets, typically brings traditional study materials to mind (e.g. thick study books, video lectures, etc.). However, Pearson recently launched its fifth API showing a dedication to innovation and meeting the rapidly changing technology scene where Pearson students live on a daily basis. Pearson's latest API, Nursing and Health Survival Guides API, allows developers to integrate data from Pearson's highly acclaimed Nursing guides into an application of choice.
Online bookseller Erapublications has an API for its in2Era web service for selling ebooks through online distributors. According to its documentation, this RESTful API, which requires an authentication key, integrates its catalog onto your site. Distributors get a cut of the sales.