APA (7th ed.) Citation

Hadi, A. W. d. H. N. S. Better Your English. Regina.

Chicago Style (17th ed.) Citation

Hadi, Artono Wardiman dan Hj. Nan Sobariah. Better Your English. Regina.

MLA (8th ed.) Citation

Hadi, Artono Wardiman dan Hj. Nan Sobariah. Better Your English. Regina.

Warning: These citations may not always be 100% accurate.