Gaya APA

Hellystia, D. (2009). Error analysis on the use of English derivational formation (13 (2) November). Jakarta: UPT. MKU Universitas Tarumanagara.

Gaya MLA

Hellystia, Devi. "Error analysis on the use of English derivational formation". 13 (2) November Jakarta: UPT. MKU Universitas Tarumanagara, 2009. Text.