APA (7th ed.) Citation

Cossio, A., & Erre, M. (2016). Skating for the sky. [publisher not identified].

Chicago Style (17th ed.) Citation

Cossio, Alexander, and Milton Erre. Skating for the Sky. Medellín, Colombia: [publisher not identified], 2016.

MLA (9th ed.) Citation

Cossio, Alexander, and Milton Erre. Skating for the Sky. [publisher not identified], 2016.

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