Gaya APA
Mattison,Harry. ().
El Salvador (Readers Publishing Co,1983).
:
.
Gaya Chicago
Mattison,Harry.
El Salvador.
Readers Publishing Co,1983
:
,
.
Text.
Gaya MLA
Mattison,Harry.
El Salvador.
Readers Publishing Co,1983
:
,
.
Text.
Gaya Turabian
Mattison,Harry.
El Salvador.
Readers Publishing Co,1983
:
,
.
Print.