Dale Jackson, D. (1982). Underground Worlds: Planet earth. Time-Life Book Inc.
Chicagoスタイル(17版)引用形式Dale Jackson, Donald. Underground Worlds: Planet Earth. Chicago, Illinois: Time-Life Book Inc, 1982.
MLA(9版)引用形式Dale Jackson, Donald. Underground Worlds: Planet Earth. Time-Life Book Inc, 1982.
警告: この引用は必ずしも正確ではありません.