Παραπομπή σε μορφή APA (7η εκδ.)
Gustedt Evelyn, Steck Birgit, & Strasdas Wolfgang. (1999). Tourism in technical Co-operation: A guide to the conception, planning and implementation of project- accompanying measures in regional rural development and nature conservation. Deutsche Gesellschaft fur technische Zusammenarbeit (GTZ) GmbH.
Παραπομπή σε μορφή Chicago (17η εκδ.)
Gustedt Evelyn, Steck Birgit, και Strasdas Wolfgang. Tourism in Technical Co-operation: A Guide to the Conception, Planning and Implementation of Project- Accompanying Measures in Regional Rural Development and Nature Conservation. Deutsche Gesellschaft fur technische Zusammenarbeit (GTZ) GmbH, 1999.
Παραπομπή σε μορφή MLA (9th εκδ.)
Gustedt Evelyn, et al. Tourism in Technical Co-operation: A Guide to the Conception, Planning and Implementation of Project- Accompanying Measures in Regional Rural Development and Nature Conservation. Deutsche Gesellschaft fur technische Zusammenarbeit (GTZ) GmbH, 1999.
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