Butler, J. Earth Observing Systems XX. SPIE Digital Library.
Chicagoスタイル(17版)引用形式Butler, James. Earth Observing Systems XX. SPIE Digital Library.
MLA(8版)引用形式Butler, James. Earth Observing Systems XX. SPIE Digital Library.
警告: この引用は必ずしも正確ではありません.
APA(7版)引用形式