APA (7th ed.) Citation

Fellow of the geological and zoological societies, A. (1918). The portal of evolution: Being a glance through the open portal of evolution at some of the mysteries of nature. Heath, Cranton.

Chicago Style (17th ed.) Citation

Fellow of the geological and zoological societies, A. The Portal of Evolution: Being a Glance Through the Open Portal of Evolution at Some of the Mysteries of Nature. London: Heath, Cranton, 1918.

MLA (9th ed.) Citation

Fellow of the geological and zoological societies, A. The Portal of Evolution: Being a Glance Through the Open Portal of Evolution at Some of the Mysteries of Nature. Heath, Cranton, 1918.