Gaya APA
Darna, V. (2006).
Cara mudah menguasai Toefl: Paper based tes. computer based test. problem solving. trik dan strategi. menghitung skor .
JAKARTA:
Puspa Swara.
Gaya MLA
Darna, Vincent.
"Cara mudah menguasai Toefl: Paper based tes. computer based test. problem solving. trik dan strategi. menghitung skor".
JAKARTA:
Puspa Swara,
2006.
Text.