APA (7e ed.) Bronvermelding

Vockell, E. L., & Asher, J. W. (1995). Educational research (2nd ed.). Merrill.

Chicago (17e ed.) Bronvermelding

Vockell, Edward L., en J. William Asher. Educational Research. 2nd ed. Englewood Cliffs, N.J: Merrill, 1995.

MLA (9e ed.) Bronvermelding

Vockell, Edward L., en J. William Asher. Educational Research. 2nd ed. Merrill, 1995.