APA (7th ed.) Citation

Corrigan, J., Jr. (1927). Highway system of Irish Free State. [publisher not identified].

Chicago Style (17th ed.) Citation

Corrigan, John, Jr. Highway System of Irish Free State. Washington, D.C.: [publisher not identified], 1927.

MLA (9th ed.) Citation

Corrigan, John, Jr. Highway System of Irish Free State. [publisher not identified], 1927.