APA (7e ed.) Bronvermelding

Huggett, A. J., & Clifford, J. M. (1950). Professional problems of teaching. s. n.

Chicago (17e ed.) Bronvermelding

Huggett, Albert John, en John M. Clifford. Professional Problems of Teaching. [Lansingn Mich: s. n, 1950.

MLA (9e ed.) Bronvermelding

Huggett, Albert John, en John M. Clifford. Professional Problems of Teaching. s. n, 1950.