User talk:Edo Da Erba

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Hello, Edo Da Erba, and welcome to Wikipedia. We appreciate encyclopedic contributions, but some of your recent contributions seem to be advertising or for promotional purposes. Wikipedia does not allow advertising. For more information on this, please see: If you still have questions, there is a new contributors' help page, or you can. You may also find the following pages useful for a general introduction to Wikipedia: I hope you enjoy editing Wikipedia! Please sign your name on talk pages using four tildes ( ~ ); this will automatically produce your name and the date. Feel free to write a note on the bottom of my talk page if you want to get in touch with me. Again, welcome!
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Your addition of a a book in multiple articles suggests that you may have have a connection with the author or publisher of the book. I have briefly looked at the linked document, and the most of the people in whose article you have added the book are only briefly mentioned. Ferdinando d'Adda was mentioned most, but I feel that even here we should not add this book. Outside of citations, external links to English language sources are strongly preferred, see WP:NONENGEL. This work appears to be suitable as a source, but probably not as 'further reading' or 'external links'.

I see that you have made several contributions to the Italian, French and German Wikipedias, and those I have looked at do not appear to be problematic. Please continue to contribute to English Wikipedia. Regards, Verbcatcher (talk) 20:13, 28 November 2019 (UTC)