Douglas, M. T. (1949). The teacher-librarian's handbook (2nd ed.). American Library Association.
Cita Chicago (17th ed.)Douglas, Mary Teresa. The Teacher-librarian's Handbook. 2nd ed. Chicago, Ill: American Library Association, 1949.
Cita MLA (9th ed.)Douglas, Mary Teresa. The Teacher-librarian's Handbook. 2nd ed. American Library Association, 1949.
Atenció: Aquestes cites poden no estar 100% correctes.