Penggayaan APA
HILL, L.A.. (1975).
Letter writing .
Jakarta:
Indira.
Chicago Style
HILL, L.A..
Letter writing.
Jakarta:
Indira,
1975.
Buku.
MLA Style
HILL, L.A..
Letter writing.
Jakarta:
Indira,
1975.
Buku.
Turabian Style
HILL, L.A..
Letter writing.
Jakarta:
Indira,
1975.
Buku.