[1] Beardsley, p. 4

[2] Beardsley, p. 8

[3] Beardsley, p. 11

[4] Thorpe, p. 5

[5] Okada, p. 6

[6]Okada,p. 15

[7]Okada, p. 18

[8]Thorpe, p. 20

[9]Thorpe,pp. 36-37

[10]Kitagawa, p.11

[11]Kitagawa, p. 13

[12]Kitagawa, p. 13

[13]Thorpe, pp. 15-18

[14]Nakayama, p. 46

[15]Nakayama, p. 36

[16]Nakayama, p. 50

[17]Nakayama, p. 53

[18]Nakayama, p. 40