Аполо 13 (Bulgarian Wikipedia)

Analysis of information sources in references of the Wikipedia article "Аполо 13" in Bulgarian language version.

refsWebsite

Global rank Bulgarian rank

75^th place

62^nd place

nasa.gov

hq.nasa.gov

Eric Jones и др. Apollo 13 Technical Air-to-Ground Voice Transcription (PDF) // NASA, 1970 – 04. с. 160. Посетен на 4 октомври 2007. Houston, we've had a problem.