APA (7th ed.) Citation

Ruff, L. M. (1962). The 17th century English music theorists.

Chicago Style (17th ed.) Citation

Ruff, Lillian M. The 17th Century English Music Theorists. 1962.

MLA (9th ed.) Citation

Ruff, Lillian M. The 17th Century English Music Theorists. 1962.

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