Heller, S., & Talarico, L. Typography sketchbooks.
Cita Chicago (17th ed.)Heller, Steven, i Lita Talarico. Typography Sketchbooks.
Cita MLA (8th ed.)Heller, Steven, i Lita Talarico. Typography Sketchbooks.
Atenció: Aquestes cites poden no estar 100% correctes.