APA (7th ed.) Citation

Pfeiffer, R. H. (1956). Clues to the Pronuntiation of Ancient Languages.

Chicago Style (17th ed.) Citation

Pfeiffer, R. H. Clues to the Pronuntiation of Ancient Languages. 1956.

MLA (8th ed.) Citation

Pfeiffer, R. H. Clues to the Pronuntiation of Ancient Languages. 1956.

Warning: These citations may not always be 100% accurate.