APA

Powell J., . (2010). How Music Works : A Listener's guide to hormony, keys, broken chorlds, perfect pitch and the secrets of a good tune. London: Penguin Books.

Chicago

Powell John, . 2010. How Music Works : A Listener's guide to hormony, keys, broken chorlds, perfect pitch and the secrets of a good tune. London: Penguin Books.

Harvard

Powell J., . (2010). How Music Works : A Listener's guide to hormony, keys, broken chorlds, perfect pitch and the secrets of a good tune. London: Penguin Books.

MLA

Powell John, . How Music Works : A Listener's guide to hormony, keys, broken chorlds, perfect pitch and the secrets of a good tune. London: Penguin Books. 2010.