Gaya APA
Bostico, Mary, Budi. (1990).
Personal Letters for Business People .
Jakarta:
Binarupa Aksara.
Gaya Chicago
Bostico, Mary, Budi.
Personal Letters for Business People.
Jakarta:
Binarupa Aksara,
1990.
Text.
Gaya MLA
Bostico, Mary, Budi.
Personal Letters for Business People.
Jakarta:
Binarupa Aksara,
1990.
Text.
Gaya Turabian
Bostico, Mary, Budi.
Personal Letters for Business People.
Jakarta:
Binarupa Aksara,
1990.
Print.