APA Style
Valera, Jaime B.. (1987).
An Introduction to Extension Delivery System .
Manila:
Island Publishing House.
Chicago Style
Valera, Jaime B..
An Introduction to Extension Delivery System.
Manila:
Island Publishing House,
1987.
teks.
MLA Style
Valera, Jaime B..
An Introduction to Extension Delivery System.
Manila:
Island Publishing House,
1987.
teks.
Turabian Style
Valera, Jaime B..
An Introduction to Extension Delivery System.
Manila:
Island Publishing House,
1987.
teks.