Knapp, R. H. (1953). Practical guidance methods for counselors, teachers and administrators. McGraw-Hill.
Chicago-referens (17:e uppl.)Knapp, Robert Henry. Practical Guidance Methods for Counselors, Teachers and Administrators. New York: McGraw-Hill, 1953.
MLA-referens (9:e uppl.)Knapp, Robert Henry. Practical Guidance Methods for Counselors, Teachers and Administrators. McGraw-Hill, 1953.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.