(1955). Keys to happiness: A Reader's Digest guide to successful living. The Reader's Digest Association.
Chicagoスタイル(17版)引用形式Keys to Happiness: A Reader's Digest Guide to Successful Living. The Reader's Digest Association, 1955.
MLA(9版)引用形式Keys to Happiness: A Reader's Digest Guide to Successful Living. The Reader's Digest Association, 1955.
警告: この引用は必ずしも正確ではありません.