APA (7th ed.) Citation

Leonard, P., & Rommel, J. (1982). Lens implantation: 30 years of progress. Junk.

Chicago Style (17th ed.) Citation

Leonard, Paul, and Jos Rommel. Lens Implantation: 30 Years of Progress. The Hague u.a: Junk, 1982.

MLA (9th ed.) Citation

Leonard, Paul, and Jos Rommel. Lens Implantation: 30 Years of Progress. Junk, 1982.