APA (7th ed.) Citation

Nultsch, W., & Gunckel, J. E. (1971). General botany. Academic Press.

Chicago Style (17th ed.) Citation

Nultsch, Wilhelm, and James E. Gunckel. General Botany. New York: Academic Press, 1971.

MLA (9th ed.) Citation

Nultsch, Wilhelm, and James E. Gunckel. General Botany. Academic Press, 1971.