Gaya APA
Spelling by principles. (1971).
tempaterbit:
penerbit.
Gaya Chicago
Spelling by principles.
Edisi.
tempaterbit:
penerbit,
1971.
Text.
Gaya MLA
Spelling by principles.
Edisi.
tempaterbit:
penerbit,
1971.
Text.
Gaya Turabian
Spelling by principles.
tempaterbit:
penerbit,
1971.
Print.