Diagram 1 Titled: Ch'in Chiu-Shao Source: Coolidge, J.L. (1963) The mathematics of Great Amateurs, pg 194
Diagram 2 Titled: The 'Hsuan-thu' Source: Swetz, F.J. and Kao, T.I. (1977) Was Pythagoras Chinese, pg 14
Diagram 3 Titled: Pictorial Representation of Method 1 Source: Swetz, F.J. and Kao, T.I. (1977) Was Pythagoras Chinese, pg 27
Diagram 4 Titled: Pictorial Representation of Method 2 Source: Swetz, F.J. and Kao, T.I. (1977) Was Pythagoras Chinese, pg 27
Diagram 5 Titled: Pictorial Representation of Method 3 Source: Swetz, F.J. and Kao, T.I. (1977) Was Pythagoras Chinese, pg 28
Diagram 6 Titled: Shi-Kie's triangle Source: Stillwell, J. (1989) Mathematics and its History, pg 137
Diagram 7 Titled: Lo Shu Source: Needham, J. (1959) Science and Civilization In China: Volume 3, Mathematics and the Sciences of the Heavens and Earth, 56
Diagram 8 Titled: Ho Thu Source: Needham, J. (1959) Science and Civilization In China: Volume 3, Mathematics and the Sciences of the Heavens and Earth, 56
Diagram 9 Titled: Modern Representation of Lo Shu Source: Needham, J. (1959) Science and Civilization In China: Volume 3, Mathematics and the Sciences of the Heavens and Earth, pg 57
Diagram 10 Titled: Modern Representation of Ho Thu Source: Needham, J. (1959) Science and Civilization In China: Volume 3, Mathematics and the Sciences of the Heavens and Earth, pg 57
Diagram 11 Titled: Yang Hui Magic Circle Source: Needham, J. (1959) Science and Civilization In China: Volume 3, Mathematics and the Sciences of the Heavens and Earth, pg 59
Diagram 12 Titled: How to construct a 4th order Magic Square Source: Rebecca Stapleton
Diagram 13 Titled: Puzzle of the Rings Source: Swetz, F.J. and Kao, T.I. (1977) Was Pythagoras Chinese, pg 111
Diagram 14 Titled: The Chinese set of Counting Rods Source: Needham, J. (1959) Science and Civilization In China: Volume 3, Mathematics and the Sciences of the Heavens and Earth.
Diagram 15 Titled: The Multiplicand 3312 Source: Rebecca Stapleton