APA Style

Greenberger, N, J., Arvanitakis, C. (1978). Drug Treatment of Gastrointestinal Discover . Newyork: Churchill Livingstone.

MLA Style

Greenberger, Norton, J., Arvanitakis, Constantine. "Drug Treatment of Gastrointestinal Discover". Newyork: Churchill Livingstone, 1978. Text.