Gaya APA
Cooperative strategies. (1997).
San Francisco:
The New Lexington Press.
Gaya Chicago
Cooperative strategies.
text.
San Francisco:
The New Lexington Press,
1997.
Tesis.
Gaya MLA
Cooperative strategies.
text.
San Francisco:
The New Lexington Press,
1997.
Tesis.
Gaya Turabian
Cooperative strategies.
San Francisco:
The New Lexington Press,
1997.
Tesis.