Cita APA

(1971). Nature / Science annual (1971 ed.). New York: Time-life books.

Chicago Style Citation

Nature / Science Annual. 1971 ed. New York: Time-life books, 1971.

Cita MLA

Nature / Science Annual. 1971 ed. New York: Time-life books, 1971.

Atenció: Aquestes cites poden no estar 100% correctes.