APA (7th ed.) Citation

Hargrave, J., & Karnoupakis, E. (2019). What Is Blockchain? (1st edition.). O'Reilly Media, Inc..

Chicago Style (17th ed.) Citation

Hargrave, John, and Evan Karnoupakis. What Is Blockchain? 1st edition. O'Reilly Media, Inc., 2019.

MLA (9th ed.) Citation

Hargrave, John, and Evan Karnoupakis. What Is Blockchain? 1st edition. O'Reilly Media, Inc., 2019.

Warning: These citations may not always be 100% accurate.