Dyfyniad APA

Georgakas, D. (1980). The Methuselah factors: Strategies for a long and vigorous life. Simon and Schuster.

Dyfyniad Arddull Chicago

Georgakas, Dan. The Methuselah Factors: Strategies for a Long and Vigorous Life. New York: Simon and Schuster, 1980.

Dyfyniad MLA

Georgakas, Dan. The Methuselah Factors: Strategies for a Long and Vigorous Life. Simon and Schuster, 1980.

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