Gaya APA

Harris, D, L., harris, J, C. (1972). How to Become a Powerful and Persuasive Public Speaker (Cetakan 1). London: A. Thomas adn Co.

Gaya MLA

Harris, Dr., Luke., harris, Julia, C.. "How to Become a Powerful and Persuasive Public Speaker". Cetakan 1 London: A. Thomas adn Co, 1972. Text.