Cita APA (7th ed.)
Feldman, D., & Schwan, K. (1989). When Do Fish Sleep?: And Other Imponderables of Everyday Life. Harper Perennial.
Cita Chicago (17th ed.)
Feldman, David, i Kassie Schwan. When Do Fish Sleep?: And Other Imponderables of Everyday Life. Nueva York, EUA: Harper Perennial, 1989.
Cita MLA (9th ed.)
Feldman, David, i Kassie Schwan. When Do Fish Sleep?: And Other Imponderables of Everyday Life. Harper Perennial, 1989.
Atenció: Aquestes cites poden no estar 100% correctes.