APA (7th ed.) Citation

Sigurður Helgason. (2009). The selected works of Sigurdur Helgason. American Mathematical Soc.

Chicago Style (17th ed.) Citation

Sigurður Helgason. The Selected Works of Sigurdur Helgason. Providence, R.I: American Mathematical Soc, 2009.

MLA (9th ed.) Citation

Sigurður Helgason. The Selected Works of Sigurdur Helgason. American Mathematical Soc, 2009.

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