APA (7th ed.) Citation

United States National Museum. (1944). A Revision of the Embioptera, or Web-Spinners, of the New World. [s.n.].

Chicago Style (17th ed.) Citation

United States National Museum. A Revision of the Embioptera, or Web-Spinners, of the New World. [Washington]: [s.n.], 1944.

MLA (9th ed.) Citation

United States National Museum. A Revision of the Embioptera, or Web-Spinners, of the New World. [s.n.], 1944.