Gaya APA
Allred, Ruel A et..al. (1990).
Spelling .
Oklahoma:
McGraw-Hill.
Gaya Chicago
Allred, Ruel A et..al.
Spelling.
Oklahoma:
McGraw-Hill,
1990.
Buku.
Gaya MLA
Allred, Ruel A et..al.
Spelling.
Oklahoma:
McGraw-Hill,
1990.
Buku.
Gaya Turabian
Allred, Ruel A et..al.
Spelling.
Oklahoma:
McGraw-Hill,
1990.
Buku.