APA (7th ed.) Citation

Einstein, A., Krappe, A. H., Sessions, R., & Strunk, W. O. (1949). The Italian madrigal. Princeton Univ. Press.

Chicago Style (17th ed.) Citation

Einstein, Alfred, Alexander Haggerty Krappe, Roger Sessions, and W. Oliver Strunk. The Italian Madrigal. Princeton: Princeton Univ. Press, 1949.

MLA (9th ed.) Citation

Einstein, Alfred, et al. The Italian Madrigal. Princeton Univ. Press, 1949.