APA

Gibson R. L., Mitchell M., . (1981). Introduction to guidance. New York: Macmillan.

Chicago

Gibson Robert L, Mitchell Marianne, . 1981. Introduction to guidance. New York: Macmillan.

Harvard

Gibson R. L., Mitchell M., . (1981). Introduction to guidance. New York: Macmillan.

MLA

Gibson Robert L, Mitchell Marianne, . Introduction to guidance. New York: Macmillan. 1981.