Roberta Cava is the author of 30 books. Two of them are international best-sellers. Her Dealing with Difficult People book was published in 1990 (23 publishers in 17 languages). Sh...lihat lebih banyakRoberta Cava is the author of 30 books. Two of them are international best-sellers. Her Dealing with Difficult People book was published in 1990 (23 publishers in 17 languages). She was born in Canada but now lives on the Gold Coast of Queensland, Australia.lihat lebih sedikit