Projek Ujian Apollo-Soyuz: Perbezaan antara semakan

* [https://history.nasa.gov/series95.html NASA History Series Publications] (many of which are on-line)

* [http://epizodsspace.airbase.ru/bibl/soyuz-i-apollon/05.html «Apollo-Soyuz»] – tell Soviet scientists, engineers and astronauts – participants of the joint work of American specialists, Politizdat 1976, with a circulation of 100 000 copies.