Comstock, J. H. (1912). The spider book: A manual for the study of the spiders and their near relatives, the scorpions, pseudoscorpions, whip-scorpions, harvestmen, and other members of the class Arachnida, found in America north of Mexico, with analytical keys for their classification, and popular accounts of their habits. Doubleday, Page & co..
Chicago Style (17th ed.) CitationComstock, John Henry. The Spider Book: A Manual for the Study of the Spiders and Their Near Relatives, the Scorpions, Pseudoscorpions, Whip-scorpions, Harvestmen, and Other Members of the Class Arachnida, Found in America North of Mexico, with Analytical Keys for Their Classification, and Popular Accounts of Their Habits. Garden City, N.Y.: Doubleday, Page & co., 1912.
MLA (9th ed.) CitationComstock, John Henry. The Spider Book: A Manual for the Study of the Spiders and Their Near Relatives, the Scorpions, Pseudoscorpions, Whip-scorpions, Harvestmen, and Other Members of the Class Arachnida, Found in America North of Mexico, with Analytical Keys for Their Classification, and Popular Accounts of Their Habits. Doubleday, Page & co., 1912.