APA (7th ed.) Citation

Boynton, G. (1987). Guide to the business cities of the world. Perry Books.

Chicago Style (17th ed.) Citation

Boynton, Graham. Guide to the Business Cities of the World. Londres: Perry Books, 1987.

MLA (9th ed.) Citation

Boynton, Graham. Guide to the Business Cities of the World. Perry Books, 1987.