Cita APA (7a ed.)

Hjelmfelt, D. C. (1990). Executive's guide to marketing, sales, and advertising law. Prentice-Hall.

Cita Chicago Style (17a ed.)

Hjelmfelt, David C. Executive's Guide to Marketing, Sales, and Advertising Law. Englewood Cliffs: Prentice-Hall, 1990.

Cita MLA (9a ed.)

Hjelmfelt, David C. Executive's Guide to Marketing, Sales, and Advertising Law. Prentice-Hall, 1990.