APA (7th ed.) Citation

Roemer, I. (1934). Our earth and its neighbors. C.C. Nelson Pub. Co..

Chicago Style (17th ed.) Citation

Roemer, Irma. Our Earth and Its Neighbors. Appleton, Wisconsin: C.C. Nelson Pub. Co., 1934.

MLA (8th ed.) Citation

Roemer, Irma. Our Earth and Its Neighbors. C.C. Nelson Pub. Co., 1934.