APA (7th ed.) Citation

Gordon, H. A. (1967). A substance acting on smooth muscle in intestinal contents of germfree animals.

Chicago Style (17th ed.) Citation

Gordon, Helmut A. A Substance Acting on Smooth Muscle in Intestinal Contents of Germfree Animals. New York, 1967.

MLA (9th ed.) Citation

Gordon, Helmut A. A Substance Acting on Smooth Muscle in Intestinal Contents of Germfree Animals. 1967.

Warning: These citations may not always be 100% accurate.