Atlas of Pidgin and Creole Language Structures Online
Roberto tin Roberto su buki?
Do you have your book? (Literally: Does Roberto have Roberto's book?)
The use of the name of the addressee in this construction represents the use of nouns as 2nd person forms discussed under Feature 18 "Politeness distinctions in second person pronouns".
Politeness distinctions in second-person pronouns: Titles used as second person forms
Marking of possessor noun phrases: Adpositional or case marking of possessor