APA Format

23722. (New York: Sterling Publishing, [sa]). Gemstones of the world. :

MLA Format

23722. Gemstones of the world. : , New York: Sterling Publishing, [sa]

Chicago Format

23722. Gemstones of the world. : , New York: Sterling Publishing, [sa]

Australian/Harvard Format

23722. New York: Sterling Publishing, [sa]. Gemstones of the world.