Cita APA (7a ed.)
Collins, P. (2009). Modals and quasi-modals in English. Rodopi.
Cita Chicago Style (17a ed.)
Collins, Peter. Modals and Quasi-modals in English. Amsterdam ; New York, NY: Rodopi, 2009.
Cita MLA (9a ed.)
Collins, Peter. Modals and Quasi-modals in English. Rodopi, 2009.
Precaución: Estas citas no son 100% exactas.