APA (7th ed.) Citation

Henderson Susan & Gray Joanna. (1983). Discovering English: Teacher's book. Cassell.

Chicago Style (17th ed.) Citation

Henderson Susan and Gray Joanna. Discovering English: Teacher's Book. Cassell, 1983.

MLA (8th ed.) Citation

Henderson Susan and Gray Joanna. Discovering English: Teacher's Book. Cassell, 1983.

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