The Immaculate Conception by Diego Vélazquez (Sale London, Sotheby's, 06.07.1994).

MLA

Phelps, Melissa. The Immaculate Conception by Diego Vélazquez (sale London, Sotheby's, 06.07.1994). London: Sotheby's, 1994.

APA

Phelps, M. (1994). The Immaculate Conception by Diego Vélazquez (Sale London, Sotheby's, 06.07.1994). London: Sotheby's.

Chicago

Phelps, Melissa The Immaculate Conception by Diego Vélazquez (sale London, Sotheby's, 06.07.1994). London: Sotheby's, 1994.