APA ציטוט

O'Farrell, N., Hoosen, A. A., Coetzee, K. D., & van den Ende, J. (1991). Genital ulcer disease in men in Durban, South Africa.

Citação norma Chicago

O'Farrell, N., A A. Hoosen, K D. Coetzee, and J. van den Ende. Genital Ulcer Disease in Men in Durban, South Africa. 1991.

ציטוט MLA

O'Farrell, N., A A. Hoosen, K D. Coetzee, and J. van den Ende. Genital Ulcer Disease in Men in Durban, South Africa. 1991.