Gaya APA
Roloff, Joan G., Snow, Roslyn. (1980).
Spelling .
London:
Collier Macmillan.
Gaya Chicago
Roloff, Joan G., Snow, Roslyn.
Spelling.
London:
Collier Macmillan,
1980.
Text.
Gaya MLA
Roloff, Joan G., Snow, Roslyn.
Spelling.
London:
Collier Macmillan,
1980.
Text.
Gaya Turabian
Roloff, Joan G., Snow, Roslyn.
Spelling.
London:
Collier Macmillan,
1980.
Print.