Cita APA (7th ed.)

Lozano, F., & Sturtevant, J. (1982). Life styles: Student's book. Longman.

Cita Chicago (17th ed.)

Lozano, Francisco, i Jane Sturtevant. Life Styles: Student's Book. New York: Longman, 1982.

Cita MLA (9th ed.)

Lozano, Francisco, i Jane Sturtevant. Life Styles: Student's Book. Longman, 1982.