Cita APA

Jones, L., & Leo jones. (1986). Progress to Proficiency: Student is book. Cambridge University Press: Cambridge.

Citación estilo Chicago

Jones, Leo, y Leo jones. Progress to Proficiency: Student Is Book. Cambridge University Press: Cambridge, 1986.

Cita MLA

Jones, Leo, y Leo jones. Progress to Proficiency: Student Is Book. Cambridge University Press: Cambridge, 1986.

Precaución: Estas citas no son 100% exactas.