APA (7th ed.) Citation

Walker, C. (2013). Fifteen years in orbit: ISS anniversaries celebrated.

Chicago Style (17th ed.) Citation

Walker, Carl. Fifteen Years in Orbit: ISS Anniversaries Celebrated. 2013.

MLA (9th ed.) Citation

Walker, Carl. Fifteen Years in Orbit: ISS Anniversaries Celebrated. 2013.

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