APA

Conference on Drug (1974 jul. : Washington D., Helms R. B., . (1975). Drug development and marketing. Washington: The American Enterprise Institute for Public Police Research.

Chicago

Conference on Drug (1974 jul. : Washington DC), Helms Robert B, . 1975. Drug development and marketing. Washington: The American Enterprise Institute for Public Police Research.

Harvard

Conference on Drug (1974 jul. : Washington D., Helms R. B., . (1975). Drug development and marketing. Washington: The American Enterprise Institute for Public Police Research.

MLA

Conference on Drug (1974 jul. : Washington DC), Helms Robert B, . Drug development and marketing. Washington: The American Enterprise Institute for Public Police Research. 1975.