南アフリカの国内事情・外交事情　1967～1969年／米国国立公文書館所蔵　米国国務省機密文書セントラル・ファイル
Confidential U.S. State Department Central Files. South Africa: Subject-Numeric Files, 1967 - 1969. RG59, Records of the Department of State, Central Foreign Policy Files (Subject-Numeric Files), South Africa, 1967 - 1969, National Archives, College Park, Maryland. 35mm silver positive microfilm 13 reels (Guide in prep.).