APA (7th ed.) Citation

Hey, W., Dulcken, H. W., & Speckter, O. (1870). One hundred picture fables. G. Routledge and Sons.

Chicago Style (17th ed.) Citation

Hey, Wilhelm, H. W. Dulcken, and Otto Speckter. One Hundred Picture Fables. London ; New York: G. Routledge and Sons, 1870.

MLA (9th ed.) Citation

Hey, Wilhelm, et al. One Hundred Picture Fables. G. Routledge and Sons, 1870.