APA

Watts A., Barboza J., Martiny D. & Académie de Droit International Law. (1994). The legal position in international law of heads os states, heads of governments and foreign ministers. Ámsterdam (Holanda): Martinus Nijhoff Publishers.

Chicago

Watts Arthur, Barboza Julio, Martiny Dieter and Académie de Droit International Law. 1994. The legal position in international law of heads os states, heads of governments and foreign ministers. Ámsterdam (Holanda): Martinus Nijhoff Publishers.

Harvard

Watts A., Barboza J., Martiny D. and Académie de Droit International Law. (1994). The legal position in international law of heads os states, heads of governments and foreign ministers. Ámsterdam (Holanda): Martinus Nijhoff Publishers.

MLA

Watts Arthur, Barboza Julio, Martiny Dieter and Académie de Droit International Law. The legal position in international law of heads os states, heads of governments and foreign ministers. Ámsterdam (Holanda): Martinus Nijhoff Publishers. 1994.