APA (7th ed.) Citation

Ibsen, S. (1972). Human quintessence. Books for Libraries Press.

Chicago Style (17th ed.) Citation

Ibsen, Sigurd. Human Quintessence. Freeport, N.Y.: Books for Libraries Press, 1972.

MLA (9th ed.) Citation

Ibsen, Sigurd. Human Quintessence. Books for Libraries Press, 1972.

Warning: These citations may not always be 100% accurate.