Gaya APA

Alexander, L., Alexander, L. (). Developing Skills: an Integrated Course for Intermediate Students New Concep English (Cet. 25). Yogyakarta: Kanisius.

Gaya MLA

Alexander, L.G.., Alexander, L.G.. "Developing Skills: an Integrated Course for Intermediate Students New Concep English". Cet. 25 Yogyakarta: Kanisius, . Text.