APA (7e ed.) Bronvermelding

Awdry, W., & Courtney, R. (2012). Secret of the green engine. Random House.

Chicago (17e ed.) Bronvermelding

Awdry, W., en Richard Courtney. Secret of the Green Engine. New York: Random House, 2012.

MLA (8e ed.) Bronvermelding

Awdry, W., en Richard Courtney. Secret of the Green Engine. Random House, 2012.