Παραπομπή σε μορφή APA (7η εκδ.)
Sandwith Trevor. (2001). Transboundary protected areas for peace and co-operation: Based on the proceedings of workshops held in Bormio (1998) and Gland (2000). IUCN.
Παραπομπή σε μορφή Chicago (17η εκδ.)
Sandwith Trevor. Transboundary Protected Areas for Peace and Co-operation: Based on the Proceedings of Workshops Held in Bormio (1998) and Gland (2000). IUCN, 2001.
Παραπομπή σε μορφή MLA (9th εκδ.)
Sandwith Trevor. Transboundary Protected Areas for Peace and Co-operation: Based on the Proceedings of Workshops Held in Bormio (1998) and Gland (2000). IUCN, 2001.
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