Cita APA (7th ed.)

RYAN PAT. (2019). EXTREME SNOW BOARDING EXTREME SPORTS (2018 Ed.). CAPSTONE PRESS.

Cita Chicago (17th ed.)

RYAN PAT. EXTREME SNOW BOARDING EXTREME SPORTS. 2018 Ed. MINNESOTA: CAPSTONE PRESS, 2019.

Cita MLA (9th ed.)

RYAN PAT. EXTREME SNOW BOARDING EXTREME SPORTS. 2018 Ed. CAPSTONE PRESS, 2019.