Gaya APA
Pyle, M., Munoz, M, E. (1991).
TOEFL Preparation Guide : Test of English as a Foreign Language .
Singapura:
Cliffs Notes.
Gaya MLA
Pyle, Michael., Munoz, Mary, Ellen.
"TOEFL Preparation Guide : Test of English as a Foreign Language".
Singapura:
Cliffs Notes,
1991.
Text.