Citazione Stile APA (7a Edizione)

Vaughan, W., Börsch-Supan, H., & Neidhardt, H. J. (1972). Caspar David Friedrich 1774-1840: Romantic landscape painting in Dresden.

Citazione stile Chigago Style (17a edizione)

Vaughan, William, Helmut Börsch-Supan, e Hans Joachim Neidhardt. Caspar David Friedrich 1774-1840: Romantic Landscape Painting in Dresden. London, 1972.

Citatione MLA (8a ed.)

Vaughan, William, et al. Caspar David Friedrich 1774-1840: Romantic Landscape Painting in Dresden. 1972.