Gaya APA

O'connell, S. (2002). Focus on IELTS (-). (4) Organisasi Perusahaan: Teo: Equinox Publishing Indonesia.

Gaya MLA

O'connell, S.. Focus on IELTS. - (4) Organisasi Perusahaan: Teo: Equinox Publishing Indonesia, 2002. Text.