APA-viite (7. p.)

Perretti, A., Costa, K., & Rickaby, R. (2010). delta O-18 and Mg/Ca temperature in Brazil margin foraminifera species.

Chicago-viite (17. p.)

Perretti, A., K. Costa, ja R. Rickaby. Delta O-18 and Mg/Ca Temperature in Brazil Margin Foraminifera Species. 2010.

MLA-viite (9. p.)

Perretti, A., et al. Delta O-18 and Mg/Ca Temperature in Brazil Margin Foraminifera Species. 2010.