Gaya APA

Eckersley, C. (1996). Essential English For Foreign Students Book 4 (edisi 2 ; Cet 20). london: Logmans Green And Co Ltd.

Gaya MLA

Eckersley, C.E. "Essential English For Foreign Students Book 4". edisi 2 ; Cet 20 london: Logmans Green And Co Ltd, 1996. Text.