APA (7th ed.) Citation

Marshall, P. S. (2016). 80/20 sales and marketing: The definitive guide to working less and making more = Jooser guide to 80/20 sales and marketing. Joosr Ltd.

Chicago Style (17th ed.) Citation

Marshall, Perry S. 80/20 Sales and Marketing: The Definitive Guide to Working Less and Making More = Jooser Guide to 80/20 Sales and Marketing. Clitheroe, United Kingdom: Joosr Ltd, 2016.

MLA (9th ed.) Citation

Marshall, Perry S. 80/20 Sales and Marketing: The Definitive Guide to Working Less and Making More = Jooser Guide to 80/20 Sales and Marketing. Joosr Ltd, 2016.