Complex sentence: Nervous about this, Cerati asked Berengo Gardin to accompany her; he agreed on condition that he too would take photographs, and he later persuaded Basaglia to turn the work into a book.
Split into simpler sentences: Nervous about this, Cerati asked Berengo Gardin to accompany her; he agreed on condition that he too would take photographs. By his own account, Berengo Gardin persuaded Basaglia to turn the work into a book.