Gaya APA

WURYANINGRUM, R, S. (2007). Pratical business English listening, avtivities and games (Cet. 1). SIDUARJO: LARAS.

Gaya MLA

WURYANINGRUM, RICA, S.. "Pratical business English listening, avtivities and games". Cet. 1 SIDUARJO: LARAS, 2007. Text.