Gaya APA

V., D, O. (2011). A STUDY OF VERB-ING FORM IN STEVE KLOVES` HARRY POTTER AND THE SORCERER`S STONE SCRIPT . SURABAYA: FS-UNITOMO.

Gaya MLA

V., DEVINA, OKA. "A STUDY OF VERB-ING FORM IN STEVE KLOVES` HARRY POTTER AND THE SORCERER`S STONE SCRIPT". SURABAYA: FS-UNITOMO, 2011. Prodi S1 Sastra Inggris.