Cita APA (7a ed.)

Barbosa, a. I., & Petty, K. (1987). <O >sol. Edinter.

Cita Chicago Style (17a ed.)

Barbosa, adapt. Isabel, y Kate Petty. <O >sol. Edinter, 1987.

Cita MLA (8a ed.)

Barbosa, adapt. Isabel, y Kate Petty. <O >sol. Edinter, 1987.