APA (7th ed.) Citation

Crawford, V. E. (1972). Excavations in the Swamps of Sumer.

Chicago Style (17th ed.) Citation

Crawford, Vaughn E. Excavations in the Swamps of Sumer. 1972.

MLA (8th ed.) Citation

Crawford, Vaughn E. Excavations in the Swamps of Sumer. 1972.

Warning: These citations may not always be 100% accurate.