Cita APA (7th ed.)

Labelle, R., & Thornton, D. B. (2005). Introduction.

Cita Chicago (17th ed.)

Labelle, Réal, i Daniel B. Thornton. Introduction. 2005.

Cita MLA (8th ed.)

Labelle, Réal, i Daniel B. Thornton. Introduction. 2005.