Gaya APA

Riyanto, S. (2008). 1000 selected Adjectives, Adverbs, Prepositions : Used In Speaking English . Gorontalo: Lanskap Zaman,dan Pustaka Pelajar.

Gaya MLA

Riyanto, Slamet. "1000 selected Adjectives, Adverbs, Prepositions : Used In Speaking English". Gorontalo: Lanskap Zaman,dan Pustaka Pelajar, 2008. Text.