APA (7th ed.) Citation

Petar, A. V. (1930). Sillimanite, kyanite, andalusite, and dumortierite. [publisher not identified].

Chicago Style (17th ed.) Citation

Petar, Alice Virginia. Sillimanite, Kyanite, Andalusite, and Dumortierite. Washington, D.C.: [publisher not identified], 1930.

MLA (9th ed.) Citation

Petar, Alice Virginia. Sillimanite, Kyanite, Andalusite, and Dumortierite. [publisher not identified], 1930.