Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.