APA (7th ed.) Citation

Sagan, H. (1969). Answers to selected problems in calculus of variations. MacGraw-Hill.

Chicago Style (17th ed.) Citation

Sagan, Hans. Answers to Selected Problems in Calculus of Variations. New York: MacGraw-Hill, 1969.

MLA (9th ed.) Citation

Sagan, Hans. Answers to Selected Problems in Calculus of Variations. MacGraw-Hill, 1969.

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