APA (7th ed.) Citation

Obama, B. (2010). Of thee i sing: A letter to my daughters.

Chicago Style (17th ed.) Citation

Obama, Barack. Of Thee I Sing: A Letter to My Daughters. 2010.

MLA (8th ed.) Citation

Obama, Barack. Of Thee I Sing: A Letter to My Daughters. 2010.

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