APA (7th ed.) Citation

Durr, W. K., LePere, J. M., & Alsin, M. L. (1973). Signposts. Houghton Mifflin.

Chicago Style (17th ed.) Citation

Durr, William Kirtley, Jean M. LePere, and Mary Lou Alsin. Signposts. Boston: Houghton Mifflin, 1973.

MLA (9th ed.) Citation

Durr, William Kirtley, et al. Signposts. Houghton Mifflin, 1973.