Gaya APA
CBS college publishing 1986-1987. (1987).
-:
Saunders College Publishing.
Gaya Chicago
CBS college publishing 1986-1987.
-.
-:
Saunders College Publishing,
1987.
Text.
Gaya MLA
CBS college publishing 1986-1987.
-.
-:
Saunders College Publishing,
1987.
Text.
Gaya Turabian
CBS college publishing 1986-1987.
-:
Saunders College Publishing,
1987.
Print.