APA (7th ed.) Citation

Wolf, M., Lam, Y. F., & Lee, P. U. (2015). Hong Kong umbrella (Rainy day dream away edition.). Peperoni Books.

Chicago Style (17th ed.) Citation

Wolf, Michael, Yik Fei Lam, and Pou U. Lee. Hong Kong Umbrella. Rainy day dream away edition. [Berlin, Germany]: Peperoni Books, 2015.

MLA (9th ed.) Citation

Wolf, Michael, et al. Hong Kong Umbrella. Rainy day dream away edition. Peperoni Books, 2015.