Gaya APA

O'Neil, M, J. (2001). The Merck Index: An Encyclopedia Of Chemicals, Drugs, and Biologicals, Book 2 (13th. ed. Book2). : .

Gaya MLA

O'Neil, Maryadele, J.. "The Merck Index: An Encyclopedia Of Chemicals, Drugs, and Biologicals, Book 2". 13th. ed. Book2 : , 2001. Text.