Παραπομπή APA
Stoken, D. A. (1978). Cycles: What they are, what they mean, how to profit by them. New York: McGraw-Hill.
Παραπομπή Chicago StyleStoken, Dick A. Cycles: What They Are, What They Mean, How to Profit By Them. New York: McGraw-Hill, 1978.
Παραπομπή MLAStoken, Dick A. Cycles: What They Are, What They Mean, How to Profit By Them. New York: McGraw-Hill, 1978.
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