syntax error with FOREIGN KEY in CREATE TABLE

I am getting following output on debugger. I am not sure what syntax is missing.

The SQL code is:

CREATE TABLE weeks(Week_Id INTEGER PRIMARY KEY, 
  Day TEXT, 
  Start_Time Text, 
  End_Time Text, 
  Break_Time Text );
CREATE TABLE projects(Project_Id INTEGER PRIMARY KEY,
  Name TEXT, 
  Description Text, 
  Client_Name Text, 
  Location Text );  
CREATE TABLE timesheets(Timesheet_Id INTEGER PRIMARY KEY,
  Project_Id  INTEGER,
  FOREIGN KEY (Project_Id) REFERENCES projects (Project_Id),
  Week_Id INTEGER,
  FOREIGN KEY (Week_Id) REFERENCES weeks (Week_Id));  

The error boils down to:

12-09 12:34:20.782: E/SQLiteLog(6490): (1) near "Week_Id": syntax error