APA (7th ed.) Citation

Funk, P., Funk, M., Huber, S., & Ruben, P. Upsize your word power [soundrecording].

Chicago Style (17th ed.) Citation

Funk, Peter, Mary Funk, Sherry Huber, and Paul Ruben. Upsize Your Word Power [soundrecording].

MLA (9th ed.) Citation

Funk, Peter, et al. Upsize Your Word Power [soundrecording].