APA (7th ed.) Citation

Lewis, R. S., & Hebden, N. (1952). Highway relationships in Maryland. [publisher not identified].

Chicago Style (17th ed.) Citation

Lewis, Ralph S., and Norman Hebden. Highway Relationships in Maryland. Washington: [publisher not identified], 1952.

MLA (9th ed.) Citation

Lewis, Ralph S., and Norman Hebden. Highway Relationships in Maryland. [publisher not identified], 1952.