Nardo, D. (2004). Black holes. Lucent Books.
Chicago Style (17th ed.) CitationNardo, Don. Black Holes. San Diego, California: Lucent Books, 2004.
MLA (9th ed.) CitationNardo, Don. Black Holes. Lucent Books, 2004.
Advarsel: Disse citationer er muligvist ikke 100% nøjagtige.