APA Style
LEY, Willy. (1978).
Kutub .
Jakarta:
Pustaka Alam Life.
Chicago Style
LEY, Willy.
Kutub.
Jakarta:
Pustaka Alam Life,
1978.
Ensiklopedi.
MLA Style
LEY, Willy.
Kutub.
Jakarta:
Pustaka Alam Life,
1978.
Ensiklopedi.
Turabian Style
LEY, Willy.
Kutub.
Jakarta:
Pustaka Alam Life,
1978.
Ensiklopedi.