Princenthal, N. (2015). Lines of Thought: Although associated with Minimalism, Agnes Martin Endeavored to express universal conditions of being in her work. Art in America.

Princenthal, Nancy. "Lines of Thought: Although Associated with Minimalism, Agnes Martin Endeavored to Express Universal Conditions of Being in Her Work." Art in America 2015.

Princenthal, Nancy. "Lines of Thought: Although Associated with Minimalism, Agnes Martin Endeavored to Express Universal Conditions of Being in Her Work." Art in America, 2015.