APA (7th ed.) Citation

Nightingale, F., Vicinus, M., & Nergaard, B. (1990). Ever yours, Florence Nightingale: Selected letters. Harvard University Press.

Chicago Style (17th ed.) Citation

Nightingale, Florence, Martha Vicinus, and Bea Nergaard. Ever Yours, Florence Nightingale: Selected Letters. Cambridge, Mass.: Harvard University Press, 1990.

MLA (9th ed.) Citation

Nightingale, Florence, et al. Ever Yours, Florence Nightingale: Selected Letters. Harvard University Press, 1990.