Cita APA (7th ed.)
ebrary, Inc, Roth, P. L., & Lemma, A. (2008). Envy and gratitude revisited. Karnac.
Cita Chicago (17th ed.)
ebrary, Inc, Priscilla Lenore Roth, i Alessandra Lemma. Envy and Gratitude Revisited. London: Karnac, 2008.
Cita MLA (9th ed.)
ebrary, Inc, et al. Envy and Gratitude Revisited. Karnac, 2008.
Atenció: Aquestes cites poden no estar 100% correctes.