APA

Koos L. V., Kefauver G. N., . (1932). Guidance in secondary schools. New York: Macmillan Co.

Chicago

Koos Leonard Vincent, Kefauver Grayson Neikirk, . 1932. Guidance in secondary schools. New York: Macmillan Co.

Harvard

Koos L. V., Kefauver G. N., . (1932). Guidance in secondary schools. New York: Macmillan Co.

MLA

Koos Leonard Vincent, Kefauver Grayson Neikirk, . Guidance in secondary schools. New York: Macmillan Co. 1932.