Collectors' Marks.

MLA

Einstein, Milton I.D, and Max A Goldstein. Collectors' Marks. Saint Louis: The Laryngoscope Press, 1918.

APA

Einstein, M. I.D, & Goldstein, M. A. (1918). Collectors' Marks. Saint Louis: The Laryngoscope Press.

Chicago

Einstein, Milton I.D., and Max A Goldstein. Collectors' Marks. Saint Louis: The Laryngoscope Press, 1918.