APA (7th ed.) Citation

Nyssens, P. (1921). Efficience. Librairie Kundig.

Chicago Style (17th ed.) Citation

Nyssens, Paul. Efficience. Genéve: Librairie Kundig, 1921.

MLA (9th ed.) Citation

Nyssens, Paul. Efficience. Librairie Kundig, 1921.

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