APA
Atchia M. e., Tropp S. e., . (1993). Environmental management. Nairobi: United Nations Environmental Programe.
Chicago
Atchia Michael ed, Tropp Shawna ed, . 1993. Environmental management. Nairobi: United Nations Environmental Programe.
Harvard
Atchia M. e., Tropp S. e., . (1993). Environmental management. Nairobi: United Nations Environmental Programe.
MLA
Atchia Michael ed, Tropp Shawna ed, . Environmental management. Nairobi: United Nations Environmental Programe. 1993.