Johnson, Norman
Martin Robertson, 1981
Buku Teks
Busyra Azheri
RajaGrafindo Persada, 2012
Buku Teks
DeRosa, Thomas F.
John Wiley & Sons, 2009
Buku Teks
Dunn, Dana S.
Wiley-Blackwell, 2009
Buku Teks
Bartholomae, David J.
John Wiley & Sons, 1981
Buku Teks