APA (7th ed.) Citation
Postnikov, M. M. (1983). The variational theory of geodesics. Dover Publications.
Chicago Style (17th ed.) Citation
Postnikov, M. M. The Variational Theory of Geodesics. New York: Dover Publications, 1983.
MLA (9th ed.) Citation
Postnikov, M. M. The Variational Theory of Geodesics. Dover Publications, 1983.
Warning: These citations may not always be 100% accurate.