Gaya APA

, ., Mueller, R, J. (1974). Principles of classroom learning and perception an introduction to ì educational psychology . New York: New York: Praeger; 1974..

Gaya MLA

, ., Mueller, Richard, J.. "Principles of classroom learning and perception an introduction to ì educational psychology". New York: New York: Praeger; 1974., 1974. Text.