Franklin

MLA

Willis, Herbert L. The Origin of the Solar System. Mount Vernon, Wash.: Hollyhurst publishing co., 1946.

APA

Willis, H. L. (1946). The origin of the solar system. Mount Vernon, Wash.: Hollyhurst publishing co.

Chicago

Willis, Herbert L. The Origin of the Solar System. Mount Vernon, Wash.: Hollyhurst publishing co., 1946.