Gaya APA

Suyanto, ., Susila, . (2015). Metodologi Penelitian Retrospective/Ex Post Facto . Yogyakarta: Bossscript.

Gaya MLA

Suyanto, ., Susila, . "Metodologi Penelitian Retrospective/Ex Post Facto". Yogyakarta: Bossscript, 2015. Text.