Παραπομπή APA

Kopmeyer, M. (1991). Thoughts to build on: Thought power for successful living. Universal book stall.

Παραπομπή Chicago Style

Kopmeyer, M.R. Thoughts to Build on: Thought Power for Successful Living. New Delhi: Universal book stall, 1991.

Παραπομπή MLA

Kopmeyer, M.R. Thoughts to Build on: Thought Power for Successful Living. Universal book stall, 1991.