LISTEN TO ME, I ASKED YOU MULTIPLEs time in previous threads questions that you didn't answer and you didn't answer others in this thread as well (if you did you would automatically concede that your point were wrong).
"does this guide book talking about lore, characters descriptions, and places from that saga contradict the source material? (it being the main dbz series), if it doesn't then it's official to be used"
1) in the guide book (dbz rpg), did the description, lore, area other than pure gameplay mechanics related information contradict the source material of dbz during the Saiyan saga at that time?. If not my argument is still completely valid. And yours in this specific context is irrelevant.