APA (7th ed.) Citation

Murnaghan, F. D. (1962). The calculus of variations / by F.D. Murnaghan. Spartan Books.

Chicago Style (17th ed.) Citation

Murnaghan, F. D. The Calculus of Variations / by F.D. Murnaghan. Spartan Books, 1962.

MLA (9th ed.) Citation

Murnaghan, F. D. The Calculus of Variations / by F.D. Murnaghan. Spartan Books, 1962.

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