APA

Sarvis M. A., Pennekamp M., . (1970). Collaboration in school guidance: a creative approach to pupil personnel work. New York: Brunner/Mazel.

Chicago

Sarvis Mary A, Pennekamp Marianne, . 1970. Collaboration in school guidance: a creative approach to pupil personnel work. New York: Brunner/Mazel.

Harvard

Sarvis M. A., Pennekamp M., . (1970). Collaboration in school guidance: a creative approach to pupil personnel work. New York: Brunner/Mazel.

MLA

Sarvis Mary A, Pennekamp Marianne, . Collaboration in school guidance: a creative approach to pupil personnel work. New York: Brunner/Mazel. 1970.