Dietrich Helms.

MLA

Lothar, Romain. Dietrich Helms. Hannover: Th. Schäfer, 1996.

APA

Lothar, R. (1996). Dietrich Helms. Hannover: Th. Schäfer.

Chicago

Lothar, Romain Dietrich Helms. Hannover: Th. Schäfer, 1996.