Gaya APA

Indriani, L., Kusumaningrum, W, R. (2018). Language Teaching : Strategies How to Develop Students' Skill (cet 1-). Jakarta,: PT Graha Cendekia.

Gaya MLA

Indriani, Lilian., Kusumaningrum, Widya, Ratna. "Language Teaching : Strategies How to Develop Students' Skill". cet 1- Jakarta,: PT Graha Cendekia, 2018. Buku Teks.