Cita APA (7th ed.)

GROLIER. (1987). Land and peoples 6. Grolier.

Cita Chicago (17th ed.)

GROLIER. Land and Peoples 6. Dandury: Grolier, 1987.

Cita MLA (9th ed.)

GROLIER. Land and Peoples 6. Grolier, 1987.