Gaya APA

wk, N. (). Pasti Bisa Mastering Grammar Practical Keys for Effective Communication (Cet. 1). [s.i.]: Andi Offset.

Gaya MLA

wk, Nikodmus. "Pasti Bisa Mastering Grammar Practical Keys for Effective Communication". Cet. 1 [s.i.]: Andi Offset, . Text.