Harlan, C. (1970). Vision and invention: A course in art fundamentals. Prentice-Hall.
Citazione stile Chigago Style (17a edizione)Harlan, Calvin. Vision and Invention: A Course in Art Fundamentals. Englewood Cliffs, NJ: Prentice-Hall, 1970.
Citatione MLA (9a ed.)Harlan, Calvin. Vision and Invention: A Course in Art Fundamentals. Prentice-Hall, 1970.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.