SEVI. 371/1579: Briefwisseling Toon Colpaert april 1991-december 1991.
Chicagoスタイル(17版)引用形式SEVI. 371/1579: Briefwisseling Toon Colpaert April 1991-december 1991.
MLA(8版)引用形式SEVI. 371/1579: Briefwisseling Toon Colpaert April 1991-december 1991.
警告: この引用は必ずしも正確ではありません.