APA (7e ed.) Bronvermelding

Virkler, H. A. (1991). Speaking your mind without stepping on toes: Guidelines for group leaders included. Victor.

Chicago (17e ed.) Bronvermelding

Virkler, Henry A. Speaking Your Mind Without Stepping on Toes: Guidelines for Group Leaders Included. New York: Victor, 1991.

MLA (9e ed.) Bronvermelding

Virkler, Henry A. Speaking Your Mind Without Stepping on Toes: Guidelines for Group Leaders Included. Victor, 1991.