APA (7th ed.) Citation

Langstaff, J. M., & Rojankovsky, F. (1991). Frog went a-courtin'. Voyager Books.

Chicago Style (17th ed.) Citation

Langstaff, John M., and Feodor Rojankovsky. Frog Went A-courtin'. Orlando, Fla: Voyager Books, 1991.

MLA (9th ed.) Citation

Langstaff, John M., and Feodor Rojankovsky. Frog Went A-courtin'. Voyager Books, 1991.