APA (7th ed.) Zitazioa

Gustafson, R. (1987). Winter prophecies. McClelland and Stewart.

Chicago Style (17th ed.) Zitazioa

Gustafson, Ralph. Winter Prophecies. Toronto: McClelland and Stewart, 1987.

MLA (9th ed.) Zitazioa

Gustafson, Ralph. Winter Prophecies. McClelland and Stewart, 1987.