APA Citation

Greig, R. G., & Schein, P. S. Therapy of gastrointestinal cancer.

Chicago Style Citation

Greig, Russell G., and P. S. Schein. Therapy of Gastrointestinal Cancer.

MLA Citation

Greig, Russell G., and P. S. Schein. Therapy of Gastrointestinal Cancer.

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