Gaya APA

Ferreiro, C., Triggle, D, J. (2004). Drugs the Straight Facts : Ritalin and Other Methylphenidate-Containing Drugs . : Chelsea House Publishers.

Gaya MLA

Ferreiro, Carmen., Triggle, David, J.. "Drugs the Straight Facts : Ritalin and Other Methylphenidate-Containing Drugs". : Chelsea House Publishers, 2004. Text.