Foster, John Wilson. Pilgrims of the Air. Devon, UK: Notting Hill Editions, 2014. Print.

Ross, A. B. (2018). Foster, John Wilson. Pilgrims of the Air. Devon, UK: Notting Hill Editions, 2014. Print. Journal of Ecocriticism, 8(1), 1–22. Recuperado a partir de https://ojs.unbc.ca/index.php/joe/article/view/1648