Gaya APA
Spack, Ruth. (2007).
Guidelines (3rd).
New York:
Cambridge University Press.
Gaya Chicago
Spack, Ruth.
Guidelines.
3rd
New York:
Cambridge University Press,
2007.
Text.
Gaya MLA
Spack, Ruth.
Guidelines.
3rd
New York:
Cambridge University Press,
2007.
Text.
Gaya Turabian
Spack, Ruth.
Guidelines.
3rd
New York:
Cambridge University Press,
2007.
Print.