APA引文

Boegel, H., & John, S. Collector's guide to minerals and gemstones.

Chicago Edition Citation

Boegel, Hellmuth, and Sinkankas John. Collector's Guide to Minerals and Gemstones.

MLA引文

Boegel, Hellmuth, and Sinkankas John. Collector's Guide to Minerals and Gemstones.

警告：這些引文格式不一定是100％准確.