APA (7th ed.) Citation

Longman. (1970). Students Book 11: Topics 13 to 19. Longman Group Limited.

Chicago Style (17th ed.) Citation

Longman. Students Book 11: Topics 13 to 19. London: Longman Group Limited, 1970.

MLA (9th ed.) Citation

Longman. Students Book 11: Topics 13 to 19. Longman Group Limited, 1970.

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