Related Rule
Argentina
Practice Relating to Rule 88. Non-Discrimination
Section E. Apartheid
Argentina’s Law of War Manual (1989) states that the practice of apartheid and similar practices are grave breaches of the 1949 Geneva Conventions and of the 1977 Additional Protocol I. 
Argentina, Leyes de Guerra, PC-08-01, Público, Edición 1989, Estado Mayor Conjunto de las Fuerzas Armadas, aprobado por Resolución No. 489/89 del Ministerio de Defensa, 23 April 1990, § 8.03.