Porsch, F. (2016). Oliver Barstow: How to think like a Mountain. form.
Chicago-Zitierstil (17. Ausg.)Porsch, Franziska. "Oliver Barstow: How to Think like a Mountain." Form 2016.
MLA-Zitierstil (8. Ausg.)Porsch, Franziska. "Oliver Barstow: How to Think like a Mountain." Form, 2016.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.