APA (7th ed.) Citation

Harrison, F. (1970). De senectute: More last words. Books for Libraries Press.

Chicago Style (17th ed.) Citation

Harrison, Frederic. De Senectute: More Last Words. Freeport, N.Y.: Books for Libraries Press, 1970.

MLA (9th ed.) Citation

Harrison, Frederic. De Senectute: More Last Words. Books for Libraries Press, 1970.