Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (9a ed.)

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