Gaya APA
Barton, L., Sardinas, C, D.
(2009).
NorthStar 3 – reading and writing
(
Ed. 3)
.
USA:
Pearson longman.
Gaya MLA
Barton, Laurie., Sardinas, Carolyn, Dupaquier.
"NorthStar 3 – reading and writing".
Ed. 3
USA:
Pearson longman,
2009.
Umum.