Catalogue of the well-known Collection of Paintings and Drawings by John Constable, ..., also important Water-Colours and Drawings by Bonington, Gainsborough and Girtin : : Oil Paintings by Cotman and Richard Wilson ; Fine modern Pictures by Sickert and Utrillo ; The Property of Dr. H.A.C. Gregory (Sale London, Sotheby & Co., 20.07.1949).

MLA

Catalogue of the Well-known Collection of Paintings and Drawings by John Constable, ..., Also Important Water-colours and Drawings by Bonington, Gainsborough and Girtin : Oil Paintings by Cotman and Richard Wilson ; Fine Modern Pictures by Sickert and Utrillo ; The Property of Dr. H.a.c. Gregory (sale London, Sotheby & Co., 20.07.1949). London: Sotheby & Co., 1949.

APA

(1949). Catalogue of the well-known Collection of Paintings and Drawings by John Constable, ..., also important Water-Colours and Drawings by Bonington, Gainsborough and Girtin : Oil Paintings by Cotman and Richard Wilson ; Fine modern Pictures by Sickert and Utrillo ; The Property of Dr. H.A.C. Gregory (Sale London, Sotheby & Co., 20.07.1949). London: Sotheby & Co.

Chicago

Catalogue of the Well-Known Collection of Paintings and Drawings by John Constable, ..., Also Important Water-Colours and Drawings by Bonington, Gainsborough and Girtin: Oil Paintings by Cotman and Richard Wilson ; Fine Modern Pictures by Sickert and Utrillo ; The Property of Dr. H.A.C. Gregory (sale London, Sotheby & Co., 20.07.1949). London: Sotheby & Co., 1949.