Gaya APA
Frankena, William K.. (1973).
Ethics (2).
New Jersey:
Prentice Hall, Inc.
Gaya Chicago
Frankena, William K..
Ethics.
2
New Jersey:
Prentice Hall, Inc,
1973.
Text.
Gaya MLA
Frankena, William K..
Ethics.
2
New Jersey:
Prentice Hall, Inc,
1973.
Text.
Gaya Turabian
Frankena, William K..
Ethics.
2
New Jersey:
Prentice Hall, Inc,
1973.
Print.