Marshall, M. (2008). Positive polynomials and sums of squares. Providence, R.I.: American Mathematical Society.
शिकागो स्टाइल उद्धरणMarshall, Murray. Positive Polynomials and Sums of Squares. Providence, R.I.: American Mathematical Society, 2008.
एमएलए उद्धरणMarshall, Murray. Positive Polynomials and Sums of Squares. Providence, R.I.: American Mathematical Society, 2008.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.