Rikken, G. (1993). The greening of Libertad: Case study of self-help approach to natural resource management featuring the Libertad Planters Association. Asian Social Institute in cooperation with Deutsche Gesellschaft fur Technische Zusammenarbeit (GTZ) GmbH.
Цитирование в стиле Чикаго (17-е изд.)Rikken, Gerard. The Greening of Libertad: Case Study of Self-help Approach to Natural Resource Management Featuring the Libertad Planters Association. Manila: Asian Social Institute in cooperation with Deutsche Gesellschaft fur Technische Zusammenarbeit (GTZ) GmbH, 1993.
Цитирование MLA (9-е изд.)Rikken, Gerard. The Greening of Libertad: Case Study of Self-help Approach to Natural Resource Management Featuring the Libertad Planters Association. Asian Social Institute in cooperation with Deutsche Gesellschaft fur Technische Zusammenarbeit (GTZ) GmbH, 1993.