Croom, F. H. (2016). Principles of topology (Dover edition, unabridged and slightly corrected republication ot the work originally published in 1989 by Saunders College Publishing.). Dover Publications, Inc.
Chicago Style (17th ed.) CitationCroom, Fred H. Principles of Topology. Dover edition, unabridged and slightly corrected republication ot the work originally published in 1989 by Saunders College Publishing. Mineola, New York: Dover Publications, Inc, 2016.
MLA (9th ed.) CitationCroom, Fred H. Principles of Topology. Dover edition, unabridged and slightly corrected republication ot the work originally published in 1989 by Saunders College Publishing. Dover Publications, Inc, 2016.
Warning: These citations may not always be 100% accurate.