APA (7e ed.) Bronvermelding

Williams, S. (2013). Are you a bully? Rourke Educational Media.

Chicago (17e ed.) Bronvermelding

Williams, Sam. Are You a Bully? Vero Beach, FL: Rourke Educational Media, 2013.

MLA (8e ed.) Bronvermelding

Williams, Sam. Are You a Bully? Rourke Educational Media, 2013.