Cita APA (7a ed.)

Zeigler, L. H. (1964). Interest groups in American society. Prentice-Hall International.

Cita Chicago Style (17a ed.)

Zeigler, Luther Harmon. Interest Groups in American Society. Englewood Cliffs, New Jersey: Prentice-Hall International, 1964.

Cita MLA (9a ed.)

Zeigler, Luther Harmon. Interest Groups in American Society. Prentice-Hall International, 1964.