APA (7th ed.) Citation

Gaspar, J. A., & Leitão, H. (2014). Squaring the circle: How Mercator constructed his projection in 1569.

Chicago Style (17th ed.) Citation

Gaspar, Joaquim Alves, and Henrique Leitão. Squaring the Circle: How Mercator Constructed His Projection in 1569. 2014.

MLA (9th ed.) Citation

Gaspar, Joaquim Alves, and Henrique Leitão. Squaring the Circle: How Mercator Constructed His Projection in 1569. 2014.

Warning: These citations may not always be 100% accurate.