Cita APA (7th ed.)
Townsend, W. C. The Truth About Mexico's Oil. Instituto Lingüístico de Verano.
Cita Chicago (17th ed.)
Townsend, William C. The Truth About Mexico's Oil. Los Angeles, EUA: Instituto Lingüístico de Verano.
Cita MLA (9th ed.)
Townsend, William C. The Truth About Mexico's Oil. Instituto Lingüístico de Verano.
Atenció: Aquestes cites poden no estar 100% correctes.