(1980). X-ray astronomy. D. Reidel.
Chicago Style (17th ed.) CitationX-ray Astronomy. Holland: D. Reidel, 1980.
MLA (9th ed.) CitationX-ray Astronomy. D. Reidel, 1980.
Advarsel: Disse citationer er muligvist ikke 100% nøjagtige.
(1980). X-ray astronomy. D. Reidel.
Chicago Style (17th ed.) CitationX-ray Astronomy. Holland: D. Reidel, 1980.
MLA (9th ed.) CitationX-ray Astronomy. D. Reidel, 1980.