APA (7th ed.) Citation

Becker, W., & Contopoulos, G. (1970). The Spiral Structure of Our Galaxy. Springer Netherlands.

Chicago Style (17th ed.) Citation

Becker, W., and G. Contopoulos. The Spiral Structure of Our Galaxy. Dordrecht: Springer Netherlands, 1970.

MLA (9th ed.) Citation

Becker, W., and G. Contopoulos. The Spiral Structure of Our Galaxy. Springer Netherlands, 1970.

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