Nyerges, A. Endre. <br/><br/>
The ecology of wealth-in-people :   Agriculture, settlement, and society on the perpetual frontier. 

 - Washington, DC :   American Anthropological Association,   1992. 
 - p. 860-881 
 - trimestral 
 - Vol.94, no.4(Dec.1992) 
 - American Anthropologist ;   vol.94, no.4 .
 - Estados Unidos.   American Anthropological Association. .