Joins gives duplicate rows, how can I filter them?

ALTER VIEW Bill
AS

				SELECT	Tour.TourId,
						Itinerary.ItineraryId,
						Tour.StartDate,
						Tour.EndDate,
						DATEDIFF(day,Tour.StartDate,Tour.EndDate) AS Duration,
						Itinerary.EstTravelDist,
						Guide.IdNo,
						CAST(5000 * DATEDIFF(day,Tour.StartDate,Tour.EndDate) AS money) AS PaymentfoGuide,
						SpecialActivity.Cost AS SpecielActivityCost,
						VisitingPlaces.Cost AS VisitingPlaceTicketCost,
						Tour.NumberOfPeople,
						CAST( UnitPrice * Tour.NumberOfPeople AS money) AS CostForMeal,
						Accommodation.Location AS Accomadation,
						CAST(UnitPrice * NumberOfPeople * DATEDIFF(day,StartDate,EndDate) AS money) AS TotalAccommodationCost,
						CAST(Itinerary.EstTravelDist * 40 AS money) AS TourPackegeCost, 
						SpecialActivity.Cost * Tour.NumberOfPeople AS TotalSpecielActivityCost,
						VisitingPlaces.Cost * Tour.NumberOfPeople AS  TotalVisitingPlaceTicketCost,
						CAST(Itinerary.EstTravelDist * 40 + SpecialActivity.Cost * Tour.NumberOfPeople + VisitingPlaces.Cost * Tour.NumberOfPeople + 
						UnitPrice * DATEDIFF(day,Tour.StartDate,Tour.EndDate) 
						+ 5000 * Tour.NumberOfPeople * DATEDIFF(day,Tour.StartDate,Tour.EndDate) + 
						UnitPrice * DATEDIFF(day,Tour.StartDate,Tour.EndDate) * Tour.NumberOfPeople AS money) AS FINAL_COST
						
				FROM (((((((((Itinerary
				INNER JOIN SpecialActivity ON
				Itinerary.ItineraryId = SpecialActivity.ItineraryId)
				INNER JOIN VisitingPlaces ON
				VisitingPlaces.ItineraryId = Itinerary.ItineraryId)
				RIGHT JOIN Tour ON
				Tour.TourId = Itinerary.TourId)
				LEFT JOIN Guide ON
				Guide.TourId = Tour.TourId)
				INNER JOIN Vehicle ON
				Vehicle.TourId = Tour.TourId)
				INNER JOIN Accommodation ON
				Accommodation.TourId = Tour.TourId)
				INNER JOIN Participant ON
				Participant.TourId = Tour.TourId)
				INNER JOIN Person ON
				Person.IdNo = Guide.IdNo)
				INNER JOIN Contract ON 
				Contract.ItineraryId = Itinerary.ItineraryId)

SELECT * FROM Bill