APA (7th ed.) Citation

Gerwing, M. (1993). Opus operatum - opus operantis.

Chicago Style (17th ed.) Citation

Gerwing, Manfred. Opus Operatum - Opus Operantis. 1993.

MLA (9th ed.) Citation

Gerwing, Manfred. Opus Operatum - Opus Operantis. 1993.

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