MLA

Beecher, John W, and F.W Lancaster. Agricultural Librarianship and Documentation As a Profession. International, 1980.

APA

Beecher, J. W, & Lancaster, F. (1980). Agricultural librarianship and documentation as a profession. International.

Chicago

Beecher, John W., and F.W Lancaster. Agricultural Librarianship and Documentation As a Profession. International, 1980.