Cita APA (7th ed.)

Williamson , G. . .. (1967). Exploring bridges. Odh ams books.

Cita Chicago (17th ed.)

Williamson , Geoffrey. Exploring Bridges. London: Odh ams books, 1967.

Cita MLA (9th ed.)

Williamson , Geoffrey. Exploring Bridges. Odh ams books, 1967.