Gaya APA
dkk., G, P, S, S, H. (1990).
The New Cambridge English Course Student 1 .
2014:
Cambridge University Press.
Gaya MLA
dkk., Ganang, P., Soedirman,, S., H.,.
"The New Cambridge English Course Student 1".
2014:
Cambridge University Press,
1990.
.