APA (7th ed.) Citation

Grace, T. M. S. &. E. (2007). Look Ahead Book 1. Erlangga.

Chicago Style (17th ed.) Citation

Grace, Th. M. Sudarwati & Eudia. Look Ahead Book 1. Erlangga, 2007.

MLA (8th ed.) Citation

Grace, Th. M. Sudarwati & Eudia. Look Ahead Book 1. Erlangga, 2007.

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