APA

Bristowe W. S., . (1947). A book of spiders. London and New York: [Penguin Books].

Chicago

Bristowe William Syer, . 1947. A book of spiders. London and New York: [Penguin Books].

Harvard

Bristowe W. S., . (1947). A book of spiders. London and New York: [Penguin Books].

MLA

Bristowe William Syer, . A book of spiders. London and New York: [Penguin Books]. 1947.