APA (7e ed.) Bronvermelding

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

Chicago (17e ed.) Bronvermelding

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

MLA (9e ed.) Bronvermelding

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