Cita APA (7a ed.)

Covey, S. R., Merrill, A. R., & Merrill, R. R. (1997). First things first every day: Because where you're headed is more important than how fast you're going. Simon & Schuster.

Cita Chicago Style (17a ed.)

Covey, Stephen R., A. Roger Merrill, y Rebecca R. Merrill. First Things First Every Day: Because Where You're Headed Is More Important than How Fast You're Going. New York: Simon & Schuster, 1997.

Cita MLA (9a ed.)

Covey, Stephen R., et al. First Things First Every Day: Because Where You're Headed Is More Important than How Fast You're Going. Simon & Schuster, 1997.