APA استشهاد

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

استشهاد بنمط شيكاغو

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

MLA استشهاد

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