Παραπομπή APA

Johnson, K. (1988). Marketing 1989-90. Harvard Business School Career Guide.

Παραπομπή Chicago Style

Johnson, Kthleen. Marketing 1989-90. Boston: Harvard Business School Career Guide, 1988.

Παραπομπή MLA

Johnson, Kthleen. Marketing 1989-90. Harvard Business School Career Guide, 1988.