Each topic in the Database includes the author's name, the date of drafting, and the date of the last update.
Texts and images are the property of their respective authors: authorization is required for their use (contact the authors via email at argonautafano(at)yahoo.it).

The correct bibliographic citation for the entire Database is as follows::

Database "la Valle del Metauro - natural and anthropic aspects of the Metauro basin", https://lavalledelmetauro.it.
Ed. Associazione Naturalistica Argonauta and Comune di Fano, Fano (PU)

Example of bibliographic citation of a topic from this Database:
POGGIANI L. and DIONISI V., 2002, last modified 01.04.2013 - Pispola golarossa - Anthus cervinus.
In: "la Valle del Metauro - natural and anthropic aspects of the Metauro basin", https://lavalledelmetauro.it.
Ed. Associazione Naturalistica Argonauta and Comune di Fano, Fano (PU), consulted on 05.11.2014.

For images used, the author and website must be credited.
Example: photo L. Poggiani, https://lavalledelmetauro.it