Collier's encyclopedia : twenty volumes with bibliography and index

MLA

Halsey, William D. Collier's Encyclopedia : Twenty Volumes with Bibliography and Index. New York (N.Y.): Collier, 1967.

APA

Halsey, W. D. (1967). Collier's encyclopedia : twenty volumes with bibliography and index. New York (N.Y.): Collier.

Chicago

Halsey, William D. ed. Collier's Encyclopedia : Twenty Volumes with Bibliography and Index. New York (N.Y.): Collier, 1967.