Παραπομπή σε μορφή APA (7η εκδ.)

Gren, I., & Brannlund, R. (1999). Green taxes: Economic theory and empirical evidence from Scandinavia. Edward Elgar.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Gren, Ing-Marie, και R. Brannlund. Green Taxes: Economic Theory and Empirical Evidence from Scandinavia. Cheltenham: Edward Elgar, 1999.

Παραπομπή σε μορφή MLA (9th εκδ.)

Gren, Ing-Marie, και R. Brannlund. Green Taxes: Economic Theory and Empirical Evidence from Scandinavia. Edward Elgar, 1999.