Παραπομπή APA

(1961). Directory of continuing numerical data projects: A survey and analysis by the Office of Critical Tables. Washington, D.C: National Academy of Sciences : National Research Council.

Παραπομπή Chicago Style

Directory of Continuing Numerical Data Projects: A Survey and Analysis By the Office of Critical Tables. Washington, D.C: National Academy of Sciences : National Research Council, 1961.

Παραπομπή MLA

Directory of Continuing Numerical Data Projects: A Survey and Analysis By the Office of Critical Tables. Washington, D.C: National Academy of Sciences : National Research Council, 1961.

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