APA (7th ed.) Citation

Pontrjagin, L. S. (1984). Learning higher mathematics. Springer.

Chicago Style (17th ed.) Citation

Pontrjagin, Lev S. Learning Higher Mathematics. Berlin: Springer, 1984.

MLA (9th ed.) Citation

Pontrjagin, Lev S. Learning Higher Mathematics. Springer, 1984.

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