Gaya APA

Riyanto, S., -, . (2015). 100 language functions for fluent english (Ed. 1). Yogyakarta: CV. andi offset.

Gaya MLA

Riyanto, Slamet., -, . "100 language functions for fluent english". Ed. 1 Yogyakarta: CV. andi offset, 2015. Text.