Cita APA (7a ed.)

Steel, P. (2011). The procrastination equation: How to stop putting things off and start getting stuff done (1st U.S. ed.). Harper.

Cita Chicago Style (17a ed.)

Steel, Piers. The Procrastination Equation: How to Stop Putting Things off and Start Getting Stuff Done. 1st U.S. ed. New York: Harper, 2011.

Cita MLA (8a ed.)

Steel, Piers. The Procrastination Equation: How to Stop Putting Things off and Start Getting Stuff Done. 1st U.S. ed. Harper, 2011.

Precaución: Estas citas no son 100% exactas.