APA (7th ed.) Citation

Zircon Publishing. (1973). Who's who, what's what and where in Ireland ([1st ed.].). Macmillan Information.

Chicago Style (17th ed.) Citation

Zircon Publishing. Who's Who, What's What and Where in Ireland. [1st ed.]. New York: Macmillan Information, 1973.

MLA (9th ed.) Citation

Zircon Publishing. Who's Who, What's What and Where in Ireland. [1st ed.]. Macmillan Information, 1973.