APA (7th ed.) Citation

Engelund, F. (1957). On the theory of multiple-well systems. ATV.

Chicago Style (17th ed.) Citation

Engelund, Frank. On the Theory of Multiple-well Systems. Copenhagen: ATV, 1957.

MLA (9th ed.) Citation

Engelund, Frank. On the Theory of Multiple-well Systems. ATV, 1957.

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