Gaya APA

METTASARI, G. (2013). Self-esteem, achievement motivation, self-efficacy and students' anxiety in speaking . Singaraja: Universitas Pendidikan Ganesha.

Gaya MLA

METTASARI, Gustiana. "Self-esteem, achievement motivation, self-efficacy and students' anxiety in speaking". Singaraja: Universitas Pendidikan Ganesha, 2013. Artikel.