ebrary, Inc, & Melark, P. G. (2012). Comets: Characteristics, composition and orbits. Nova Science Publishers.
Chicagoスタイル(17版)引用形式ebrary, Inc, , Peter G. Melark. Comets: Characteristics, Composition and Orbits. Hauppauge, N.Y.: Nova Science Publishers, 2012.
MLA(9版)引用形式ebrary, Inc, , Peter G. Melark. Comets: Characteristics, Composition and Orbits. Nova Science Publishers, 2012.
警告: この引用は必ずしも正確ではありません.