Gaya APA

Riyanto, S. (2008). The first things first english vocabulary 1000 selected adjectives, adverbs, prepositions used in speaking english (Cet. 1). Yogyakarta: Pustaka Peajar.

Gaya MLA

Riyanto, Slamet. "The first things first english vocabulary 1000 selected adjectives, adverbs, prepositions used in speaking english". Cet. 1 Yogyakarta: Pustaka Peajar, 2008. Art Original.