Educational Services Inc. African Education Program. (1964). Mathematics primary one (Prelim. rev. ed.). ESI.
Chicagoスタイル(17版)引用形式Educational Services Inc. African Education Program. Mathematics Primary One. Prelim. rev. ed. Watertown, MA: ESI, 1964.
MLA(9版)引用形式Educational Services Inc. African Education Program. Mathematics Primary One. Prelim. rev. ed. ESI, 1964.
警告: この引用は必ずしも正確ではありません.