APA-viite (7. p.)

Ferreira, P., Magueijo, J., & Gorski, K. (1998). Evidence for non-Gaussianity in the COBE DMR 4 year sky maps.

Chicago-viite (17. p.)

Ferreira, P., J. Magueijo, ja K. Gorski. Evidence for Non-Gaussianity in the COBE DMR 4 Year Sky Maps. 1998.

MLA-viite (9. p.)

Ferreira, P., et al. Evidence for Non-Gaussianity in the COBE DMR 4 Year Sky Maps. 1998.