APA (7th ed.) Citation

Hey, M. H. (1955). An index of mineral species & varieties arranged chemically: With an alphabetical index of accepted mineral names and synonyms (2., rev. Aufl.).

Chicago Style (17th ed.) Citation

Hey, Max H. An Index of Mineral Species & Varieties Arranged Chemically: With an Alphabetical Index of Accepted Mineral Names and Synonyms. 2., rev. Aufl. London, 1955.

MLA (9th ed.) Citation

Hey, Max H. An Index of Mineral Species & Varieties Arranged Chemically: With an Alphabetical Index of Accepted Mineral Names and Synonyms. 2., rev. Aufl. 1955.