 According to Needham and Lu (1974:88) , "It is a little difficult to ascertain the reason for this, since fives and sixes (if they corresponded to the viscera) would have rather been expected."
<coherence>  According to Needham and Lu (1974:88) , "It is a little difficult to ascertain the reason for this, since fives and sixes (if they corresponded to the viscera) would have rather been expected."
 According to Needham and Lu , "It is a little difficult to ascertain the reason for this, since fives and sixes (if they corresponded to the viscera) would have rather been expected."