APA-referens (7:e uppl.)

Heil, C. (2019). Introduction to real analysis. Springer.

Chicago-referens (17:e uppl.)

Heil, Christopher. Introduction to Real Analysis. Cham, Switzerland: Springer, 2019.

MLA-referens (9:e uppl.)

Heil, Christopher. Introduction to Real Analysis. Springer, 2019.