Gaya APA
Lado, R., Fries, C., C. (1990).
English Pronunciation : Exercises in Sound Segment Intonation, and Rhythm .
USA:
ANN Arbor.
Gaya MLA
Lado, Robert., Fries, Charles, C..
"English Pronunciation : Exercises in Sound Segment Intonation, and Rhythm".
USA:
ANN Arbor,
1990.
Buku Inti.