Gaya APA
Robinson, Sharon. (1991).
Promises to Keep .
New york:
scholastic.
Gaya Chicago
Robinson, Sharon.
Promises to Keep.
New york:
scholastic,
1991.
Buku.
Gaya MLA
Robinson, Sharon.
Promises to Keep.
New york:
scholastic,
1991.
Buku.
Gaya Turabian
Robinson, Sharon.
Promises to Keep.
New york:
scholastic,
1991.
Buku.