APA

Third Philip Morris Science Symposium, . (1919). Structure and biochemistry of natural systems Proceedings of yhe third Philip Morris Science Symposium. New York: Philip Morris Incorcoration.

Chicago

Third Philip Morris Science Symposium, . 1919. Structure and biochemistry of natural systems Proceedings of yhe third Philip Morris Science Symposium. New York: Philip Morris Incorcoration.

Harvard

Third Philip Morris Science Symposium, . (1919). Structure and biochemistry of natural systems Proceedings of yhe third Philip Morris Science Symposium. New York: Philip Morris Incorcoration.

MLA

Third Philip Morris Science Symposium, . Structure and biochemistry of natural systems Proceedings of yhe third Philip Morris Science Symposium. New York: Philip Morris Incorcoration. 1919.