APA (7th ed.) Citation

Horne, G., Aisenberg, S., & Ho, D. Ukulele: Beginning, intermediate, mastering.

Chicago Style (17th ed.) Citation

Horne, Greg, Shana Aisenberg, and Daniel Ho. Ukulele: Beginning, Intermediate, Mastering.

MLA (9th ed.) Citation

Horne, Greg, et al. Ukulele: Beginning, Intermediate, Mastering.