Cita APA (7th ed.)
Keller, W. P. (1992). Pleasures forevermore. Harvest House Publishers.
Cita Chicago (17th ed.)
Keller, W. Phillip. Pleasures Forevermore. Eugene, Or.: Harvest House Publishers, 1992.
Cita MLA (9th ed.)
Keller, W. Phillip. Pleasures Forevermore. Harvest House Publishers, 1992.
Atenció: Aquestes cites poden no estar 100% correctes.