Citazione Stile APA (7a Edizione)

ÓBaoill, P., & ÓMaolagáin, B. (1989). Four corners: A new primary geography for ... class. Folens.

Citazione stile Chigago Style (17a edizione)

ÓBaoill, Pádraig, e Brian ÓMaolagáin. Four Corners: A New Primary Geography for ... Class. Dublin: Folens, 1989.

Citatione MLA (9a ed.)

ÓBaoill, Pádraig, e Brian ÓMaolagáin. Four Corners: A New Primary Geography for ... Class. Folens, 1989.