Cita APA (7th ed.)

Hafner, A. W. (1998). Descriptive statistical techniques for librarians (2nd ed.). American Library Association.

Cita Chicago (17th ed.)

Hafner, Arthur Wayne. Descriptive Statistical Techniques for Librarians. 2nd ed. Chicago: American Library Association, 1998.

Cita MLA (9th ed.)

Hafner, Arthur Wayne. Descriptive Statistical Techniques for Librarians. 2nd ed. American Library Association, 1998.