APA Style
COVINO, W, A. et al (1980).
Cliffs Graduate Record Examination: aptitiude test, preparation guide (1).
Nebraska:
Cliffs Notes, Inc..
MLA Style
COVINO, WILLIAM, A.. et al.
"Cliffs Graduate Record Examination: aptitiude test, preparation guide".
1
Nebraska:
Cliffs Notes, Inc.,
1980.
Text.