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Angliss, Sarah dan Uttley, Colin. Science in the Dock: The man who trained the space dogs. Dicapai pada 28 Januari 2005.

Anon. An Internet memorial to Laika. Dicapai pada 1 September 2004.

Dubbs, Chris dan Burgess, Colin. Animals In Space: From Research Rockets to the Space Shuttle, 2007.

Grahn, Sven. Sputnik-2, more news from distant history. Dicapai pada 1 September 2004.

Mars Exploration Rover Mission: Opportunity arrives at "Vostok" . Dicapai pada 24 Mac 2005.

NSSDC Master Catalog: Sputnik 2 (26 November 2003). Dicapai pada 1 September 2004.

On This Day, 3 November – 1957: Russians launch dog into space. BBC News. Dicapai pada 1 September 2004.

Soviet Fires New Satellite, Carrying Dog; Half-Ton Sphere Is Reported 900 Miles Up (3 November 1957). New York Times.

Whitehouse, David (28 Oktober 2002). First dog in space died within hours, BBC News Online.

Zak, Anatoly (3 November 1999). The True Story of Laika the Dog. space.com.