Cita APA (7a ed.)

Ayerst, D. (1971). Guardian. Biography of a newspaper. Collins.

Cita Chicago Style (17a ed.)

Ayerst, David. Guardian. Biography of a Newspaper. London: Collins, 1971.

Cita MLA (9a ed.)

Ayerst, David. Guardian. Biography of a Newspaper. Collins, 1971.