APA

Harmer G., . (1950). Scott's catalog of U.S. satmps specialized, including issues under. n.p: Scott.

Chicago

Harmer Gordon, . 1950. Scott's catalog of U.S. satmps specialized, including issues under. n.p: Scott.

Harvard

Harmer G., . (1950). Scott's catalog of U.S. satmps specialized, including issues under. n.p: Scott.

MLA

Harmer Gordon, . Scott's catalog of U.S. satmps specialized, including issues under. n.p: Scott. 1950.