APA (7th ed.) Citation

(2005). English on sky: For junior high school student. Erlangga.

Chicago Style (17th ed.) Citation

English on Sky: For Junior High School Student. Erlangga, 2005.

MLA (8th ed.) Citation

English on Sky: For Junior High School Student. Erlangga, 2005.

Warning: These citations may not always be 100% accurate.