APA استشهاد

Stalk, G., & Butman, J. (2008). Five future strategies you need right now. Harvard Business School.

استشهاد بنمط شيكاغو

Stalk, George, و John Butman. Five Future Strategies You Need Right Now. Boston: Harvard Business School, 2008.

MLA استشهاد

Stalk, George, و John Butman. Five Future Strategies You Need Right Now. Harvard Business School, 2008.