Gaya APA
Field, John C.. (1974).
Advanced English 9 .
Madrid:
Madrid [Didactronia].
Gaya Chicago
Field, John C..
Advanced English 9.
Madrid:
Madrid [Didactronia],
1974.
Text.
Gaya MLA
Field, John C..
Advanced English 9.
Madrid:
Madrid [Didactronia],
1974.
Text.
Gaya Turabian
Field, John C..
Advanced English 9.
Madrid:
Madrid [Didactronia],
1974.
Print.