Dyfyniad APA

(1906). American men of science: A biographical directory. The Science Press.

Dyfyniad Arddull Chicago

American Men of Science: A Biographical Directory. New York: The Science Press, 1906.

Dyfyniad MLA

American Men of Science: A Biographical Directory. The Science Press, 1906.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.