. (2002). Principle of Contradiction. Legal Research Quarterly, 5(130), 59-86.

. "Principle of Contradiction", Legal Research Quarterly, 5, 130, 2002, 59-86.

. (2002). 'Principle of Contradiction', Legal Research Quarterly, 5(130), pp. 59-86.

, "Principle of Contradiction," Legal Research Quarterly, 5 130 (2002): 59-86,

. Principle of Contradiction. Leg Res Q. 2002;5(130):59-86 (In Persian).