APA (7th ed.) Citation

Liszt, F., La Mara, & Bache, C. (1969). Letters of Franz Liszt. Greenwood Press.

Chicago Style (17th ed.) Citation

Liszt, Franz, La Mara, and Constance Bache. Letters of Franz Liszt. New York: Greenwood Press, 1969.

MLA (8th ed.) Citation

Liszt, Franz, et al. Letters of Franz Liszt. Greenwood Press, 1969.