Hill, N. (1977). Success through positive mental attitude. Pocket book.
Chicagoスタイル(17版)引用形式Hill, Napoleon. Success Through Positive Mental Attitude. New York: Pocket book, 1977.
MLA(9版)引用形式Hill, Napoleon. Success Through Positive Mental Attitude. Pocket book, 1977.
警告: この引用は必ずしも正確ではありません.