P. Signac : Watercolors by Paul Signac.

MLA

P. Signac : Watercolors by Paul Signac. St. Louis: The Greenberg Gallery, 1990.

APA

(1990). P. Signac : Watercolors by Paul Signac. St. Louis: The Greenberg Gallery.

Chicago

P. Signac: Watercolors by Paul Signac. St. Louis: The Greenberg Gallery, 1990.