APA (7th ed.) Citation

HEER, H. d. (1966). Etude No. 1. C.F. Peters.

Chicago Style (17th ed.) Citation

HEER, Hans de. Etude No. 1. C.F. Peters, 1966.

MLA (8th ed.) Citation

HEER, Hans de. Etude No. 1. C.F. Peters, 1966.

Warning: These citations may not always be 100% accurate.