Cita APA (7a ed.)

Schneider, H., Schneider, N., & Ballantine, B. (1947). Now try this. William R. Scott.

Cita Chicago Style (17a ed.)

Schneider, Herman, Nina Schneider, y Bill Ballantine. Now Try This. New York: William R. Scott, 1947.

Cita MLA (9a ed.)

Schneider, Herman, et al. Now Try This. William R. Scott, 1947.