APA (7th ed.) Citation

Warring, R. H. (1972). Rock collecting and making semi-precious jewellery : cutting and polishing gemstones / (by) Ron Warring: Cutting and polishing gemstones. Paul.

Chicago Style (17th ed.) Citation

Warring, R. H. Rock Collecting and Making Semi-precious Jewellery : Cutting and Polishing Gemstones / (by) Ron Warring: Cutting and Polishing Gemstones. London: Paul, 1972.

MLA (9th ed.) Citation

Warring, R. H. Rock Collecting and Making Semi-precious Jewellery : Cutting and Polishing Gemstones / (by) Ron Warring: Cutting and Polishing Gemstones. Paul, 1972.

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