Gaya APA

MCCALLUM, G, P. (1983). Idiom Drills: for students of english as a second language: second eedition (Ed. 2). Amerika: Harper & Row.

Gaya MLA

MCCALLUM, George, P.. "Idiom Drills: for students of english as a second language: second eedition". Ed. 2 Amerika: Harper & Row, 1983. Text.