APA (7th ed.) Citation

Boothroyd Jennifer. (2007). First Step Non Fiction What is A Gas. Lerner.

Chicago Style (17th ed.) Citation

Boothroyd Jennifer. First Step Non Fiction What Is A Gas. UK: Lerner, 2007.

MLA (9th ed.) Citation

Boothroyd Jennifer. First Step Non Fiction What Is A Gas. Lerner, 2007.

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