Gaya APA

Zin-Giber, . (2014). Top Fokus Toefl : Tes Of English As A Foreign language . Surabaya: Genta Grup Prodction.

Gaya MLA

Zin-Giber, . "Top Fokus Toefl : Tes Of English As A Foreign language". Surabaya: Genta Grup Prodction, 2014. Buku Tex.