APA (7th ed.) Citation

Cullen, D. (2003). Days that changed the world: The first man in space. Ticktock.

Chicago Style (17th ed.) Citation

Cullen, David. Days That Changed the World: The First Man in Space. Great Britain: Ticktock, 2003.

MLA (9th ed.) Citation

Cullen, David. Days That Changed the World: The First Man in Space. Ticktock, 2003.

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