Andrew Wyeth. La suite Helga

MLA

Plazy, G, and J Wilmerding. Andrew Wyeth. La Suite Helga. Paris: Adam Biro, 1987.

APA

Plazy, G., & Wilmerding, J. (1987). Andrew Wyeth. La suite Helga. Paris: Adam Biro.

Chicago

Plazy, G., and J Wilmerding. Andrew Wyeth. La Suite Helga. Paris: Adam Biro, 1987.