Gaya APA

RIYANTO, S. (2010). 9999% Sukses TOEIC: Succesfull Strategies for TOEIC (1). Yogyakarta: Pustaka Widyatama.

Gaya MLA

RIYANTO, SLAMET. "9999% Sukses TOEIC: Succesfull Strategies for TOEIC". 1 Yogyakarta: Pustaka Widyatama, 2010. Text.