Billigmeier, S. (1991). Inner easting. Oliver Nelson.
Cita Chicago (17th ed.)Billigmeier, Shirley. Inner Easting. Oliver Nelson, 1991.
Cita MLA (9th ed.)Billigmeier, Shirley. Inner Easting. Oliver Nelson, 1991.
Atenció: Aquestes cites poden no estar 100% correctes.