Gaya APA
Teaching English as a Second or Foreign Language. (2001).
United States:
Heinle and Heinle.
Gaya Chicago
Teaching English as a Second or Foreign Language.
Third Edition.
United States:
Heinle and Heinle,
2001.
Buku.
Gaya MLA
Teaching English as a Second or Foreign Language.
Third Edition.
United States:
Heinle and Heinle,
2001.
Buku.
Gaya Turabian
Teaching English as a Second or Foreign Language.
United States:
Heinle and Heinle,
2001.
Buku.