APA
Dulfer Robert, Roche Kevin, . (1998). First phase report of the Trebon Otter project : Scientific background and recommendations for conservation and management planning. Strasbourg: Council of Europe.
Chicago
Dulfer Robert, Roche Kevin, . 1998. First phase report of the Trebon Otter project : Scientific background and recommendations for conservation and management planning. Strasbourg: Council of Europe.
Harvard
Dulfer Robert, Roche Kevin, . (1998). First phase report of the Trebon Otter project : Scientific background and recommendations for conservation and management planning. Strasbourg: Council of Europe.
MLA
Dulfer Robert, Roche Kevin, . First phase report of the Trebon Otter project : Scientific background and recommendations for conservation and management planning. Strasbourg: Council of Europe. 1998.