APA

Smith G. E., . (1951). Principles and practices of the guidance program: a basic text. New York: Macmillan.

Chicago

Smith Gleen Erle,1905, . 1951. Principles and practices of the guidance program: a basic text. New York: Macmillan.

Harvard

Smith G. E., . (1951). Principles and practices of the guidance program: a basic text. New York: Macmillan.

MLA

Smith Gleen Erle,1905, . Principles and practices of the guidance program: a basic text. New York: Macmillan. 1951.