Cita APA (7a ed.)

O'Neill, R., & Mugglestone, P. (1993). Fourth dimension: Course book (2nd ed.).

Cita Chicago Style (17a ed.)

O'Neill, Robert, y Patricia Mugglestone. Fourth Dimension: Course Book. 2nd ed. Harlow, 1993.

Cita MLA (9a ed.)

O'Neill, Robert, y Patricia Mugglestone. Fourth Dimension: Course Book. 2nd ed. 1993.