Gaya APA
S.Feldman, R. (2014).
Principles of language learning and teaching (Edisi ke-6).
New York:
Distributor/Addison Wesley Longman, Inc..
Gaya MLA
S.Feldman, Robert.
"Principles of language learning and teaching".
Edisi ke-6
New York:
Distributor/Addison Wesley Longman, Inc.,
2014.
Prodi TBI.