APA (7th ed.) Citation

Duval, P., Dawson, R., & Wilson, K. I. (1998). Counting 1 to 20: English, Romani, German, French. The Bogey Hole.

Chicago Style (17th ed.) Citation

Duval, Pauline, Robert Dawson, and Ken Illustrator Wilson. Counting 1 to 20: English, Romani, German, French. Alfreton, Derbyshire: The Bogey Hole, 1998.

MLA (8th ed.) Citation

Duval, Pauline, et al. Counting 1 to 20: English, Romani, German, French. The Bogey Hole, 1998.