APA aipamena

Oparin, A. I. (1968). The origin and initial development of life. National Aeronautics and Space Administration ; for sale by the Clearinghouse for Federal Scientific and Technical Information.

Chicago Style aipamena

Oparin, Aleksandr Ivanovich. The Origin and Initial Development of Life. [Washington, D.C.] : Springfireld, Va.: National Aeronautics and Space Administration ; for sale by the Clearinghouse for Federal Scientific and Technical Information, 1968.

MLA aipamena

Oparin, Aleksandr Ivanovich. The Origin and Initial Development of Life. National Aeronautics and Space Administration ; for sale by the Clearinghouse for Federal Scientific and Technical Information, 1968.