Cita APA (7a ed.)

HarperCollins. (1991). Collins COBUILD English guides. 1, Prepositions. HarperCollins.

Cita Chicago Style (17a ed.)

HarperCollins. Collins COBUILD English Guides. 1, Prepositions. London: HarperCollins, 1991.

Cita MLA (8a ed.)

HarperCollins. Collins COBUILD English Guides. 1, Prepositions. HarperCollins, 1991.

Precaución: Estas citas no son 100% exactas.