GUTH, H. P., & SHNIDER, P. S. (1981). Our world today. D.C. Heath.
Chicagoスタイル(17版)引用形式GUTH, Hans P., , Patricia S. SHNIDER. Our World Today. Lexington: D.C. Heath, 1981.
MLA(9版)引用形式GUTH, Hans P., , Patricia S. SHNIDER. Our World Today. D.C. Heath, 1981.
警告: この引用は必ずしも正確ではありません.