APA

Parker (George Howard), . (1046). The World Expands: Recollections Of A Zoologist. : .

Chicago

Parker (George Howard), . 1046. The World Expands: Recollections Of A Zoologist. : .

Harvard

Parker (George Howard), . (1046). The World Expands: Recollections Of A Zoologist. : .

MLA

Parker (George Howard), . The World Expands: Recollections Of A Zoologist. : . 1046.