APA (7th ed.) Citation

Portmann, A., & Aushen, R. N. (1964). New path in biology. Harper and Row.

Chicago Style (17th ed.) Citation

Portmann, Adolf, and Ruth Nanda Aushen. New Path in Biology. New York: Harper and Row, 1964.

MLA (9th ed.) Citation

Portmann, Adolf, and Ruth Nanda Aushen. New Path in Biology. Harper and Row, 1964.