Johnson, S. (1987). One minute for myself: How to manage your most valuable asset. Avon Books.
Cita Chicago (17th ed.)Johnson, Spencer. One Minute for Myself: How to Manage Your Most Valuable Asset. New York: Avon Books, 1987.
Cita MLA (9th ed.)Johnson, Spencer. One Minute for Myself: How to Manage Your Most Valuable Asset. Avon Books, 1987.
Atenció: Aquestes cites poden no estar 100% correctes.