Gladstone, G. R. Astrobiology and Planetary Missions. SPIE Digital Library.
Chicagoスタイル(17版)引用形式Gladstone, G. Randall. Astrobiology and Planetary Missions. SPIE Digital Library.
MLA(9版)引用形式Gladstone, G. Randall. Astrobiology and Planetary Missions. SPIE Digital Library.
警告: この引用は必ずしも正確ではありません.