Gaya APA

Kirana, D, P. (2014). Lev Vygotsky's sociocultural approach and authentic materials in EFL classrooms . Tulungagung: UPB IAIN Tulungagung.

Gaya MLA

Kirana, Dhinuk, Puspita. "Lev Vygotsky's sociocultural approach and authentic materials in EFL classrooms". Tulungagung: UPB IAIN Tulungagung, 2014. Jurnal.