Gaya APA
Riyanto, S. (2004).
2500 Key Words to be Good at English With Useful Examples (Cet.1).
Yogyakarta:
Pustaka Pelajar.
Gaya MLA
Riyanto, Slamet.
"2500 Key Words to be Good at English With Useful Examples".
Cet.1
Yogyakarta:
Pustaka Pelajar,
2004.
Text.