APA (7th ed.) Zitazioa

Heyer, G. (1980). These old shades. Pan Books.

Chicago Style (17th ed.) Zitazioa

Heyer, Georgette. These Old Shades. London: Pan Books, 1980.

MLA (9th ed.) Zitazioa

Heyer, Georgette. These Old Shades. Pan Books, 1980.