Citazione Stile APA (7a Edizione)

Freitas, D. d. (1993). The copyright system: Practice and problems in developing countries. Commonwealth Secretariat.

Citazione stile Chigago Style (17a edizione)

Freitas, Denis de. The Copyright System: Practice and Problems in Developing Countries. London: Commonwealth Secretariat, 1993.

Citatione MLA (9a ed.)

Freitas, Denis de. The Copyright System: Practice and Problems in Developing Countries. Commonwealth Secretariat, 1993.