Unmodern observations
MLA
Nietzsche, Friedrich Wilhelm, and William Arrowsmith. Unmodern Observations. New Haven: Yale University Press, 1990
APA, 7th edition
Nietzsche, F. Wilhelm, & Arrowsmith, W. (1990). Unmodern observations. New Haven: Yale University Press
Chicago, 17th edition
Nietzsche, Friedrich Wilhelm, and William Arrowsmith. Unmodern observations. New Haven: Yale University Press, 1990