APA (7th ed.) Citation

O'neil,Paul. (1983). Gemstones. Time-life books.

Chicago Style (17th ed.) Citation

O'neil,Paul. Gemstones. Usa: Time-life books, 1983.

MLA (9th ed.) Citation

O'neil,Paul. Gemstones. Time-life books, 1983.

Warning: These citations may not always be 100% accurate.