APA (7th ed.) Citation

Helm, E., & Bartok, B. (1971). Bartok. Faber.

Chicago Style (17th ed.) Citation

Helm, Everett, and Bela Bartok. Bartok. London: Faber, 1971.

MLA (9th ed.) Citation

Helm, Everett, and Bela Bartok. Bartok. Faber, 1971.

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