APA (7th ed.) Citation

Whitfield ,Philip, & Ruth Whitfield. Why Does my Heart Beat? Marshall Editions Ltd.

Chicago Style (17th ed.) Citation

Whitfield ,Philip, and Ruth Whitfield. Why Does My Heart Beat? Marshall Editions Ltd.

MLA (9th ed.) Citation

Whitfield ,Philip, and Ruth Whitfield. Why Does My Heart Beat? Marshall Editions Ltd.

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