Léon Frederic.

MLA

Jottrand, Lucien, and Léon Frederic. Léon Frederic. Anvers: De Sikkel, 1950.

APA

Jottrand, L., & Frederic, L. (1950). Léon Frederic. Anvers: De Sikkel.

Chicago

Jottrand, Lucien., and Léon Frederic. Léon Frederic. Anvers: De Sikkel, 1950.