Gaya APA

PUTRO, L, Y, M. (2008). Correlational study between vocabulary mastery and sentence structure understanding and writing . : Universitas Sebelas Maret.

Gaya MLA

PUTRO, Listyawan, Yudhi, Marwanto. "Correlational study between vocabulary mastery and sentence structure understanding and writing". : Universitas Sebelas Maret, 2008. Skripsi.