Citazione Stile APA (7a Edizione)

O'Neill, R. A., & Mugglestone, P. (1987). The Fourth Dimension. Coursebook. Longman.

Citazione stile Chigago Style (17a edizione)

O'Neill, Robert. Autor, e Patricia Mugglestone. The Fourth Dimension. Coursebook. Essex: Longman, 1987.

Citatione MLA (9a ed.)

O'Neill, Robert. Autor, e Patricia Mugglestone. The Fourth Dimension. Coursebook. Longman, 1987.