APA (7th ed.) Citation

Levin, B., & Riddell, R. H. (1984). Frontiers in gastrointestinal cancer. Elsevier.

Chicago Style (17th ed.) Citation

Levin, Bernard, and Robert H. Riddell. Frontiers in Gastrointestinal Cancer. New York: Elsevier, 1984.

MLA (9th ed.) Citation

Levin, Bernard, and Robert H. Riddell. Frontiers in Gastrointestinal Cancer. Elsevier, 1984.

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