APA (7th ed.) Citation

Lettich, S. (2005). Duplo impacto. CLMC.

Chicago Style (17th ed.) Citation

Lettich, Sheldon. Duplo Impacto. CLMC, 2005.

MLA (8th ed.) Citation

Lettich, Sheldon. Duplo Impacto. CLMC, 2005.

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