Cita APA (7th ed.)

Beauchamp, W. L., Mayfield, J. C., & West, J. Y. (1957). Science problems: Book 3 (Rev. ed.). Scott, Foresman and Company.

Cita Chicago (17th ed.)

Beauchamp, Wilbur L., John C. Mayfield, i Joe Young West. Science Problems: Book 3. Rev. ed. Chicago: Scott, Foresman and Company, 1957.

Cita MLA (9th ed.)

Beauchamp, Wilbur L., et al. Science Problems: Book 3. Rev. ed. Scott, Foresman and Company, 1957.

Atenció: Aquestes cites poden no estar 100% correctes.