APA (7th ed.) Citation

Vogelin, C. F., & Vogelin, F. M. (1977). Classification and index of the world's language. Elsevier.

Chicago Style (17th ed.) Citation

Vogelin, Charles Frederick, and Florence Marie Vogelin. Classification and Index of the World's Language. New York: Elsevier, 1977.

MLA (9th ed.) Citation

Vogelin, Charles Frederick, and Florence Marie Vogelin. Classification and Index of the World's Language. Elsevier, 1977.