APA (7th ed.) Citation

Petruschell, R. L. (1968). Some curve-fitting fundamentals. Rand Corp..

Chicago Style (17th ed.) Citation

Petruschell, R. L. Some Curve-fitting Fundamentals. Santa Monica, Calif.: Rand Corp., 1968.

MLA (9th ed.) Citation

Petruschell, R. L. Some Curve-fitting Fundamentals. Rand Corp., 1968.