APA citiranje

Helms, R. B. (1975). Drug development and marketing. Washington, D.C: The American Enterprise Institute for Public Policy Research.

Trích dẫn kiểu Chicago

Helms, Robert B. Drug Development and Marketing. Washington, D.C: The American Enterprise Institute for Public Policy Research, 1975.

MLA citiranje

Helms, Robert B. Drug Development and Marketing. Washington, D.C: The American Enterprise Institute for Public Policy Research, 1975.