APA (7th ed.) Citation

Tidmarsh, G. D., & Solsberg, L. B. (1977). Field evaluation of oil mop and preheat unit. [publisher not identified].

Chicago Style (17th ed.) Citation

Tidmarsh, G. D., and L. B. Solsberg. Field Evaluation of Oil Mop and Preheat Unit. [Place of publication not identified]: [publisher not identified], 1977.

MLA (9th ed.) Citation

Tidmarsh, G. D., and L. B. Solsberg. Field Evaluation of Oil Mop and Preheat Unit. [publisher not identified], 1977.