APA

Sinclair J. E., . (1976). Interest groups in America. Morristown, N.J: General Learning Press.

Chicago

Sinclair John E, . 1976. Interest groups in America. Morristown, N.J: General Learning Press.

Harvard

Sinclair J. E., . (1976). Interest groups in America. Morristown, N.J: General Learning Press.

MLA

Sinclair John E, . Interest groups in America. Morristown, N.J: General Learning Press. 1976.