APA
Gunnerson C. G., Stuckey David C, . (1986). Anaerobic Digestion: Principles And Practices For Biogas Systems. Washigton: World Bank.
Chicago
Gunnerson Charles G, Stuckey David C, . 1986. Anaerobic Digestion: Principles And Practices For Biogas Systems. Washigton: World Bank.
Harvard
Gunnerson C. G., Stuckey David C, . (1986). Anaerobic Digestion: Principles And Practices For Biogas Systems. Washigton: World Bank.
MLA
Gunnerson Charles G, Stuckey David C, . Anaerobic Digestion: Principles And Practices For Biogas Systems. Washigton: World Bank. 1986.