Rothschild, W. (2012). Extinct Birds An attempt to unite in one volume a short account of those Birds which have become extinct in historical times. Project Gutenberg.
Chicago Style (17th ed.) CitationRothschild, Walter. Extinct Birds An Attempt to Unite in One Volume a Short Account of Those Birds Which Have Become Extinct in Historical Times. Project Gutenberg, 2012.
MLA (9th ed.) CitationRothschild, Walter. Extinct Birds An Attempt to Unite in One Volume a Short Account of Those Birds Which Have Become Extinct in Historical Times. Project Gutenberg, 2012.
Warning: These citations may not always be 100% accurate.