APA

Knapp R. H., . (1953). Practical guidance methods for counselors, teachers and administrators. New York: McGraw-Hill.

Chicago

Knapp Robert Henry, . 1953. Practical guidance methods for counselors, teachers and administrators. New York: McGraw-Hill.

Harvard

Knapp R. H., . (1953). Practical guidance methods for counselors, teachers and administrators. New York: McGraw-Hill.

MLA

Knapp Robert Henry, . Practical guidance methods for counselors, teachers and administrators. New York: McGraw-Hill. 1953.