Gaya APA

Zinner, M, J., Ashley, S, W. (2013). Maingot's abdominal Operations (Ed. 12). United State: McGrawHill Medical.

Gaya MLA

Zinner, Michael, J.., Ashley, Stanley, W.. "Maingot's abdominal Operations". Ed. 12 United State: McGrawHill Medical, 2013. Text.