APA (7th ed.) Citation

Elen, L. W. F. (1965). Differential equations / by W.F. Elen. Macmillan.

Chicago Style (17th ed.) Citation

Elen, L. W. F. Differential Equations / by W.F. Elen. Macmillan, 1965.

MLA (9th ed.) Citation

Elen, L. W. F. Differential Equations / by W.F. Elen. Macmillan, 1965.

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