Cita APA (7a ed.)
Campbell, L. (2011). Publishers' sales to schools under threat. Bookseller, 5469, 5.
Cita Chicago Style (17a ed.)
Campbell, Lisa. "Publishers' Sales to Schools Under Threat." Bookseller 5469 (2011): 5.
Cita MLA (9a ed.)
Campbell, Lisa. "Publishers' Sales to Schools Under Threat." Bookseller, 5469, 2011, p. 5.
Precaución: Estas citas no son 100% exactas.