Παραπομπή APA

Pearl, R. (1925). Vital Statistics of the National Academy of Sciences: I. Age at Election.

Παραπομπή Chicago Style

Pearl, Raymond. Vital Statistics of the National Academy of Sciences: I. Age At Election. 1925.

Παραπομπή MLA

Pearl, Raymond. Vital Statistics of the National Academy of Sciences: I. Age At Election. 1925.

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