V de la Cruz. (1989). FAO forestry paper N.87: Small scale harvesting operations of wood and non-wood forest products involving rural people. Rome: FAO.
Chicago-tyylinen lähdeviittausV de la Cruz. FAO Forestry Paper N.87: Small Scale Harvesting Operations of Wood and Non-wood Forest Products Involving Rural People. Rome: FAO, 1989.
MLA-viiteV de la Cruz. FAO Forestry Paper N.87: Small Scale Harvesting Operations of Wood and Non-wood Forest Products Involving Rural People. Rome: FAO, 1989.
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