APA (7th ed.) Citation

Bull, S. C., & Bull, O. (1888). Ole Bull: A memoir. Houghton Mifflin.

Chicago Style (17th ed.) Citation

Bull, Sara C., and Ole Bull. Ole Bull: A Memoir. Boston: Houghton Mifflin, 1888.

MLA (9th ed.) Citation

Bull, Sara C., and Ole Bull. Ole Bull: A Memoir. Houghton Mifflin, 1888.

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