Cita APA (7a ed.)

Covey, S. R., Whitman, B., & England, B. (2009). Predictable results in unpredictable times. FranklinCovey.

Cita Chicago Style (17a ed.)

Covey, Stephen R., Bob Whitman, y Breck England. Predictable Results in Unpredictable Times. Salt Lake City, UT: FranklinCovey, 2009.

Cita MLA (9a ed.)

Covey, Stephen R., et al. Predictable Results in Unpredictable Times. FranklinCovey, 2009.