APA (7e ed.) Bronvermelding

Fowler, W. S., Pidcock, J., & Yorkey, R. C. Incentive themes. Book 4, teacher´s edition.

Chicago (17e ed.) Bronvermelding

Fowler, W. S., J. Pidcock, en Richard C. Yorkey. Incentive Themes. Book 4, Teacher´s Edition.

MLA (8e ed.) Bronvermelding

Fowler, W. S., et al. Incentive Themes. Book 4, Teacher´s Edition.