Gaya APA
Kusrian, E. (2010).
Learning To Thank, To Apologize, And To Express Politeness (Ed. 1).
Jakarta:
Multazam Mulia Utama.
Gaya MLA
Kusrian, Eri.
"Learning To Thank, To Apologize, And To Express Politeness".
Ed. 1
Jakarta:
Multazam Mulia Utama,
2010.
.