APA aipamena

Butler, S., Butler, M., & Howard, D. F. (1962). The correspondence of Samuel Butler with his siter May. Calif. U.P..

Chicago Style aipamena

Butler, Samuel, May Butler, and Daniel Francis Howard. The Correspondence of Samuel Butler with His Siter May. Berkeley: Calif. U.P., 1962.

MLA aipamena

Butler, Samuel, et al. The Correspondence of Samuel Butler with His Siter May. Calif. U.P., 1962.