Gaya APA
Sukur, S, G., Wright, S, W. (2011).
Soal-Soal Grammar TOEFL Lengkap & Terkini (1).
Yogyakarta:
Kalarana Press.
Gaya MLA
Sukur, Silvester, Goridus., Wright, Stacey, Whitney.
"Soal-Soal Grammar TOEFL Lengkap & Terkini".
1
Yogyakarta:
Kalarana Press,
2011.
Text.