APA (7th ed.) Citation

Guyod, H. (1954). Guyod model electrical resistivity logs. [publisher not identified].

Chicago Style (17th ed.) Citation

Guyod, Hubert. Guyod Model Electrical Resistivity Logs. [Houston? Tex.]: [publisher not identified], 1954.

MLA (9th ed.) Citation

Guyod, Hubert. Guyod Model Electrical Resistivity Logs. [publisher not identified], 1954.