Gaya APA
Stewardship . (1993).
San Francisco:
Pustaka Baru Press.
Gaya Chicago
Stewardship .
1.
San Francisco:
Pustaka Baru Press,
1993.
ANTON CORNER.
Gaya MLA
Stewardship .
1.
San Francisco:
Pustaka Baru Press,
1993.
ANTON CORNER.
Gaya Turabian
Stewardship .
San Francisco:
Pustaka Baru Press,
1993.
ANTON CORNER.