An e-book citation follows the same rules as a print book citation except that the electronic retrieval statement (URL) takes the place of publisher and location. URL is the main publisher URL only.
Poole, M.S., & Van de Ven, A.H. (Eds.) (2004). Handbook of organizational change and innovation. Retrieved from
McCarver, P.L.(2001). History of New England honey bees. doi:10.1036/0071393722
For additional information see the APA Publication Manual, pp. 202-206
Last Name, First Initial(s). (Year). Title of encylopedia entry. In Title of Encyclopedia. Retrieved from URL of entry
(For additional information see APA Publication Manual, pp. 205 #30)
Encyclopedias: If multiple editions of the encyclopedia have been published for years, you do not need to include all of the publication information. Include the edition number, publication year, and format (Print or Web). If there are multiple volumes, include the specific volume number that was used.