APA (7th ed.) Citation

Collins (Firma: Londres, Inglaterra). (1990). Collins Cobuild English grammar. Collins.

Chicago Style (17th ed.) Citation

Collins (Firma: Londres, Inglaterra). Collins Cobuild English Grammar. London: Collins, 1990.

MLA (8th ed.) Citation

Collins (Firma: Londres, Inglaterra). Collins Cobuild English Grammar. Collins, 1990.

Warning: These citations may not always be 100% accurate.