APA (7th ed.) Citation

Retamal C. Pedro & Humphreys Derek. (1998). Occurrence of suicide and seasonal variation. Universidade de São Paulo.

Chicago Style (17th ed.) Citation

Retamal C. Pedro and Humphreys Derek. Occurrence of Suicide and Seasonal Variation. Universidade de São Paulo, 1998.

MLA (9th ed.) Citation

Retamal C. Pedro and Humphreys Derek. Occurrence of Suicide and Seasonal Variation. Universidade de São Paulo, 1998.

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