APA aipamena

Tran, X. D. (2009). US Culture thru Speaking: Students' book. H: University of Education Publishing house.

Chicago Style aipamena

Tran, Xuan Diep. US Culture Thru Speaking: Students' Book. H: University of Education Publishing house, 2009.

MLA aipamena

Tran, Xuan Diep. US Culture Thru Speaking: Students' Book. H: University of Education Publishing house, 2009.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.