Gaya APA

Houston, W, R., Howsam, R, B. (1972). Competency-Based Teacher Education : progress, problems, and prospects . America: Scince Research Associates.

Gaya MLA

Houston, W., Robert., Howsam, Robert, B.. "Competency-Based Teacher Education : progress, problems, and prospects". America: Scince Research Associates, 1972. Text.