APA (7th ed.) Citation

Ryan, M., & Ó Cassaide, G. (1991). Early Ireland: Culture and treasures. An Post.

Chicago Style (17th ed.) Citation

Ryan, Michael, and Gearóid Ó Cassaide. Early Ireland: Culture and Treasures. Dublin: An Post, 1991.

MLA (9th ed.) Citation

Ryan, Michael, and Gearóid Ó Cassaide. Early Ireland: Culture and Treasures. An Post, 1991.

Warning: These citations may not always be 100% accurate.