Gaya APA

Henry, N, B. et al (1996). Environment and Smidak principles power and responsibility action ì and re-action . Lucerne: Lucerne: Avenira; 1996.

Gaya MLA

Henry, Nelson, B. et al. "Environment and Smidak principles power and responsibility action ì and re-action". Lucerne: Lucerne: Avenira; 1996, 1996. Text.