Gaya APA

Pellant, C. et al (1999). Collecting Gems and Minerals: Hold the treasures of the Earth in the Palm of Your Hand . London, UK: Quarto Publishing plc.

Gaya MLA

Pellant, Chris. et al. "Collecting Gems and Minerals: Hold the treasures of the Earth in the Palm of Your Hand". London, UK: Quarto Publishing plc, 1999. Text.