APA (7th ed.) Citation

Henry, F. A. (1924). Regulations governing radio communication in Spain. [publisher not identified].

Chicago Style (17th ed.) Citation

Henry, Frank Anderson. Regulations Governing Radio Communication in Spain. Washington, D.C.: [publisher not identified], 1924.

MLA (9th ed.) Citation

Henry, Frank Anderson. Regulations Governing Radio Communication in Spain. [publisher not identified], 1924.