APA (7th ed.) Citation

Lauf, R. J. (2011). Collector's guide to the tourmaline group. Schiffer Pub..

Chicago Style (17th ed.) Citation

Lauf, R. J. Collector's Guide to the Tourmaline Group. Atglen, PA: Schiffer Pub., 2011.

MLA (9th ed.) Citation

Lauf, R. J. Collector's Guide to the Tourmaline Group. Schiffer Pub., 2011.