Gaya APA

SARI, D, L., NISWATIN, C. (2018). System requirement analysis for e-learning matearials to support academic writing skill for engineering students of vocational higher education . Yogyakarta: ADGVI in cooperation with graduate school of UNY.

Gaya MLA

SARI, Dita, Lupita., NISWATIN, Choirun. "System requirement analysis for e-learning matearials to support academic writing skill for engineering students of vocational higher education". Yogyakarta: ADGVI in cooperation with graduate school of UNY, 2018. Artikel.