Gaya APA
Crimmon, J, M, M. (1967).
Writing With A Purpose : From Source To Statement (Edisi 4) .
U.S.A:
Houghton Miffln Company.
Gaya MLA
Crimmon, James, M., MC..
"Writing With A Purpose : From Source To Statement (Edisi 4)".
U.S.A:
Houghton Miffln Company,
1967.
Buku Teks.