Cita APA (7th ed.)

Grinnell-Heidrich. (1965). Experimental discoveries in nature. Stansi Scientific.

Cita Chicago (17th ed.)

Grinnell-Heidrich. Experimental Discoveries in Nature. Chicago: Stansi Scientific, 1965.

Cita MLA (9th ed.)

Grinnell-Heidrich. Experimental Discoveries in Nature. Stansi Scientific, 1965.