Gaya APA

Beyer, T, R. (2007). 501 english verb: fully conjugatet in all the tenses in an easy to learn format alphabeticallt arranged (Cet.1). Jakarta: .

Gaya MLA

Beyer, Thomas, R.. "501 english verb: fully conjugatet in all the tenses in an easy to learn format alphabeticallt arranged". Cet.1 Jakarta: , 2007. Textbook.