Gaya APA
Heaton, J., Methold, K.
(1973).
Reading With Understanding 1 Intermediate
.
Yogyakarta:
Kanisius.
Gaya MLA
Heaton, J.B.., Methold, K..
"Reading With Understanding 1 Intermediate".
Yogyakarta:
Kanisius,
1973.
Text.