APA (7th ed.) Citation

American Library Association. (1949). A.L.A. membership directory. American Library Association.

Chicago Style (17th ed.) Citation

American Library Association. A.L.A. Membership Directory. Chicago: American Library Association, 1949.

MLA (8th ed.) Citation

American Library Association. A.L.A. Membership Directory. American Library Association, 1949.

Warning: These citations may not always be 100% accurate.