Cita APA (7th ed.)

Beatty, R. W., Bernardin, H. J., & Nickel, J. E. (1987). The productivity sourcebook. Human Resource Development Press.

Cita Chicago (17th ed.)

Beatty, Richard W., H. John Bernardin, i James E. Nickel. The Productivity Sourcebook. Amherst, Mass: Human Resource Development Press, 1987.

Cita MLA (9th ed.)

Beatty, Richard W., et al. The Productivity Sourcebook. Human Resource Development Press, 1987.