APA (7th ed.) Citation

VICKERS, G. T. (2009). Nested Ellipses. Mathematical Spectrum, 41(3), 131.

Chicago Style (17th ed.) Citation

VICKERS, G. T. "Nested Ellipses." Mathematical Spectrum 41, no. 3 (2009): 131.

MLA (9th ed.) Citation

VICKERS, G. T. "Nested Ellipses." Mathematical Spectrum, vol. 41, no. 3, 2009, p. 131.