Cita APA (7th ed.)

SACK, S. M., & STEINBERG, H. J. (1981). The salesperson's legal guide. Prentice-Hall.

Cita Chicago (17th ed.)

SACK, Steven Mitchell, i Howard Jay STEINBERG. The Salesperson's Legal Guide. New Jersey: Prentice-Hall, 1981.

Cita MLA (9th ed.)

SACK, Steven Mitchell, i Howard Jay STEINBERG. The Salesperson's Legal Guide. Prentice-Hall, 1981.