(1965). The World Book Encyclopedia G: Volume 8. Field Enterprises Educational Corporation.
Cita Chicago (17th ed.)The World Book Encyclopedia G: Volume 8. Chicago, Estados Unidos: Field Enterprises Educational Corporation, 1965.
Cita MLA (9th ed.)The World Book Encyclopedia G: Volume 8. Field Enterprises Educational Corporation, 1965.
Atenció: Aquestes cites poden no estar 100% correctes.