Gaya APA

WURYANINGRUM, R, S. (2008). PERSPECTIVE; ENGLISH FOR ECONOMICS READING, WRITING AND GRAMMAR (Cet. 1). SIDUARJO: LARAS.

Gaya MLA

WURYANINGRUM, RICA, S.. "PERSPECTIVE; ENGLISH FOR ECONOMICS READING, WRITING AND GRAMMAR". Cet. 1 SIDUARJO: LARAS, 2008. Text.