APA (7th ed.) Citation

Trzyna, T. C., & Smith, J. D. (1976). Population: An international directory of organizations and information resources. Public Affairs Clearinghouse.

Chicago Style (17th ed.) Citation

Trzyna, Thaddeus C., and Joan Dickson Smith. Population: An International Directory of Organizations and Information Resources. Claremont, Calif.: Public Affairs Clearinghouse, 1976.

MLA (8th ed.) Citation

Trzyna, Thaddeus C., and Joan Dickson Smith. Population: An International Directory of Organizations and Information Resources. Public Affairs Clearinghouse, 1976.