Gaya APA

Cooper, D, R., Schind, . (2014). Bussines Reaserch Mathods (E-Book) . : McGraw-Hill/Irwin,.

Gaya MLA

Cooper, Donald, R., Schind, . "Bussines Reaserch Mathods (E-Book)". : McGraw-Hill/Irwin,, 2014. Text.