Cita APA (7th ed.)

Frasier, G. W., MacCracken, H. D., & Decker, D. G. (1955). Solving problems. L.W. Singer.

Cita Chicago (17th ed.)

Frasier, George Willard, Helen Dolman MacCracken, i Donald Gilmore Decker. Solving Problems. Syracuse: L.W. Singer, 1955.

Cita MLA (9th ed.)

Frasier, George Willard, et al. Solving Problems. L.W. Singer, 1955.