APA-Zitierstil (7. Ausg.)

Webster, R. (1976). Gems: Their sources, descriptions and identification (3. ed., 3. impr.). Butterworth.

Chicago-Zitierstil (17. Ausg.)

Webster, Robert. Gems: Their Sources, Descriptions and Identification. 3. ed., 3. impr. London [u.a.]: Butterworth, 1976.

MLA-Zitierstil (9. Ausg.)

Webster, Robert. Gems: Their Sources, Descriptions and Identification. 3. ed., 3. impr. Butterworth, 1976.