APA

Duncan W., . (1949). Webs in the wind: the habits of web-weaving spiders. New York: Ronald Press Co.

Chicago

Duncan Winifred, . 1949. Webs in the wind: the habits of web-weaving spiders. New York: Ronald Press Co.

Harvard

Duncan W., . (1949). Webs in the wind: the habits of web-weaving spiders. New York: Ronald Press Co.

MLA

Duncan Winifred, . Webs in the wind: the habits of web-weaving spiders. New York: Ronald Press Co. 1949.