Gaya APA
Endraswara, S. (2016).
Metodologi penelitian ekologi sastra (Cet. 1).
Yogyakarta:
Center for Academic Publishing Service.
Gaya MLA
Endraswara, Suwardi.
"Metodologi penelitian ekologi sastra".
Cet. 1
Yogyakarta:
Center for Academic Publishing Service,
2016.
Text.