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http://www.sacred-texts.com/sex/kama/kama102.htm
4 Chapter 1, Preface, The Kama Sutra of Vatsayayana, Translated by Sir Richard Burton.
http://www.sacred-texts.com/sex/kama/kama101.htm
5 Chapter 2, Observations on the Three Worldly Attainments of Virtue, Wealth, and Love, The Kama Sutra of Vatsayayana, Translated by Sir Richard Burton.
http://www.sacred-texts.com/sex/kama/kama102.htm
6 Max Muller, Sacred Books of East series.
7 Brhad-Âranyaka Upanisad
8 Vigyana Bhairava Tantra.
http://www.escapefromwatchtower.com/vigyan.html
9,10 Chapter III. On the Study of the Sixty-Four Arts, The Kama Sutra of Vatsayayana, Translated by Sir Richard Burton.
http://www.sacred-texts.com/sex/kama/kama103.htm
11 http://hinduism.about.com/library/weekly/extra/bl-wed-types.htm