APA

(1907). The story of germ life. New York: D. Appleton & Company.

Chicago

1907. The story of germ life. New York: D. Appleton & Company.

Harvard

(1907). The story of germ life. New York: D. Appleton & Company.

MLA

The story of germ life. New York: D. Appleton & Company. 1907.