Cita APA

Bright, J. A. (1970). Gerunds and infinitives (as objects), unit 20; teacher's book. Longman.

Citación estilo Chicago

Bright, J. A. Gerunds and Infinitives (as Objects), Unit 20; Teacher's Book. Inglaterra: Longman, 1970.

Cita MLA

Bright, J. A. Gerunds and Infinitives (as Objects), Unit 20; Teacher's Book. Inglaterra: Longman, 1970.