General :: Group Records By Month

I would just like to know if it is possible to group Months together: this is what i have did so far :

Code:
SELECT Count(Source.ID) AS CountOfID, Clusters.Cluster_Desc, Department.Dept_Desc, DatePart('m',Source.Day_Month_Year) AS [Month], Source.Original_Source, Source.Headline, Source.Issue, Source.Analysis, Source.Action
FROM Source INNER JOIN (Department INNER JOIN (Clusters INNER JOIN Cluster_Dept ON Clusters.Cluster_ID = Cluster_Dept.Cluster_ID) ON Department.Dept_ID = Cluster_Dept.Dept_ID) ON Source.ID = Cluster_Dept.ID
GROUP BY Clusters.Cluster_Desc, Department.Dept_Desc, Source.Original_Source, Source.Headline, Source.Issue, Source.Analysis, Source.Action, Source.Day_Month_Year;