Samways, L. (1997). The 12 secrets of health and happiness. Penguin.
Chicago Style (17. basım) AtıfSamways, Louise. The 12 Secrets of Health and Happiness. Ringwood, Vic.: Penguin, 1997.
MLA (8th ed.) AtıfSamways, Louise. The 12 Secrets of Health and Happiness. Penguin, 1997.
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