Gaya APA

English, F, W., Kaufman, R, A. (1975). Needs Assessment: A Focus for Curriculum Development . Washington: Association for Supervision and Curriculum Development (ASCD).

Gaya MLA

English, Fenwick, W.., Kaufman, Roger, A.. "Needs Assessment: A Focus for Curriculum Development". Washington: Association for Supervision and Curriculum Development (ASCD), 1975. Art Original.