Cita APA (7a ed.)
Engstrom, T. W., & Larson, R. C. (1984). Motivation to last a lifetime. Zondervan Pub. House.
Cita Chicago Style (17a ed.)
Engstrom, Theodore Wilhelm, y Robert C. Larson. Motivation to Last a Lifetime. Grand Rapids, Mich.: Zondervan Pub. House, 1984.
Cita MLA (9a ed.)
Engstrom, Theodore Wilhelm, y Robert C. Larson. Motivation to Last a Lifetime. Zondervan Pub. House, 1984.
Precaución: Estas citas no son 100% exactas.