Cita APA (7a ed.)

Roth, P. L., & Lemma, A. (2008). Envy and gratitude revisited. Karnac.

Cita Chicago Style (17a ed.)

Roth, Priscilla Lenore, y Alessandra Lemma. Envy and Gratitude Revisited. London: Karnac, 2008.

Cita MLA (8a ed.)

Roth, Priscilla Lenore, y Alessandra Lemma. Envy and Gratitude Revisited. Karnac, 2008.