APA (7th ed.) Citation

Ryden, S. (1957). Andean excavations. [s. n.].

Chicago Style (17th ed.) Citation

Ryden, Stig. Andean Excavations. Stockholm: [s. n.], 1957.

MLA (8th ed.) Citation

Ryden, Stig. Andean Excavations. [s. n.], 1957.

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