Cita APA (7th ed.)

GROLIER. (1987). Land and peoples 1. Grolier.

Cita Chicago (17th ed.)

GROLIER. Land and Peoples 1. Dandury: Grolier, 1987.

Cita MLA (9th ed.)

GROLIER. Land and Peoples 1. Grolier, 1987.