APA

Fiell C., Fiell P., .Design of the 20th Century. Koln: Taschen.

Chicago

Fiell Charlotte, Fiell Peter, .Design of the 20th Century. Koln: Taschen.

Harvard

Fiell C., Fiell P., .Design of the 20th Century. Koln: Taschen.

MLA

Fiell Charlotte, Fiell Peter, .Koln: Taschen. .