APA aipamena

Elwell, D. (1979). Man made gemstones. John Wiley.

Chicago Style aipamena

Elwell, D. Man Made Gemstones. New York: John Wiley, 1979.

MLA aipamena

Elwell, D. Man Made Gemstones. John Wiley, 1979.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.