APA

Lewis J. S., . (1996). Rain of iron and ice: the very real threat of comet and asteroid bombardment. Reading, Mass: Addison-Wesley Pub. Co.

Chicago

Lewis John S, . 1996. Rain of iron and ice: the very real threat of comet and asteroid bombardment. Reading, Mass: Addison-Wesley Pub. Co.

Harvard

Lewis J. S., . (1996). Rain of iron and ice: the very real threat of comet and asteroid bombardment. Reading, Mass: Addison-Wesley Pub. Co.

MLA

Lewis John S, . Rain of iron and ice: the very real threat of comet and asteroid bombardment. Reading, Mass: Addison-Wesley Pub. Co. 1996.