. (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).