Gaya APA
Vardy, Alam. (1990).
Fluid principles .
England:
McGraw-Hill.
Gaya Chicago
Vardy, Alam.
Fluid principles.
England:
McGraw-Hill,
1990.
Text.
Gaya MLA
Vardy, Alam.
Fluid principles.
England:
McGraw-Hill,
1990.
Text.
Gaya Turabian
Vardy, Alam.
Fluid principles.
England:
McGraw-Hill,
1990.
Print.