APA (7th ed.) Zitazioa

Tugwell, F. (1975). The politics of oil in Venezuela. Stanford University.

Chicago Style (17th ed.) Zitazioa

Tugwell, Franklin. The Politics of Oil in Venezuela. Stanford: Stanford University, 1975.

MLA (9th ed.) Zitazioa

Tugwell, Franklin. The Politics of Oil in Venezuela. Stanford University, 1975.