(1999). The new solar system. New York: Sky Pub.
Trích dẫn kiểu ChicagoThe New Solar System. New York: Sky Pub, 1999.
MLA CitationThe New Solar System. New York: Sky Pub, 1999.
Advarsel: Disse citationer er muligvist ikke 100% nøjagtige.
(1999). The new solar system. New York: Sky Pub.
Trích dẫn kiểu ChicagoThe New Solar System. New York: Sky Pub, 1999.
MLA CitationThe New Solar System. New York: Sky Pub, 1999.