Citazione Stile APA (7a Edizione)

Collins, M. E., & Ó hUallacháin, F. (1978). An outline of modern European history 1870 - 1950 (1. publ.). Educational co. of Ireland.

Citazione stile Chigago Style (17a edizione)

Collins, Mary E., e Frank Ó hUallacháin. An Outline of Modern European History 1870 - 1950. 1. publ. Dublin: Educational co. of Ireland, 1978.

Citatione MLA (9a ed.)

Collins, Mary E., e Frank Ó hUallacháin. An Outline of Modern European History 1870 - 1950. 1. publ. Educational co. of Ireland, 1978.