Gaya APA

Covino, WIlliam A., Bernard V. Zandy, David A. Kay. (1988). Cliffs GRE preparation guide . Singapura: John Willey & Sons.

Gaya Chicago

Covino, WIlliam A., Bernard V. Zandy, David A. Kay. Cliffs GRE preparation guide. Singapura: John Willey & Sons, 1988. Text.

Gaya MLA

Covino, WIlliam A., Bernard V. Zandy, David A. Kay. Cliffs GRE preparation guide. Singapura: John Willey & Sons, 1988. Text.

Gaya Turabian

Covino, WIlliam A., Bernard V. Zandy, David A. Kay. Cliffs GRE preparation guide. Singapura: John Willey & Sons, 1988. Print.