Porterfield, M. (1979). East of tomorrow. Macfadden Romance.
Chicagoスタイル(17版)引用形式Porterfield, Marie. East of Tomorrow. New York: Macfadden Romance, 1979.
MLA(8版)引用形式Porterfield, Marie. East of Tomorrow. Macfadden Romance, 1979.
警告: この引用は必ずしも正確ではありません.