APA citiranje

Rodriguez-Pichardo, A., Aznar, J., Camacho, F., Borobio, M. V., & Perea, E. J. (1991). Sexually transmitted diseases in homosexual males in Seville, Spain.

Citação norma Chicago

Rodriguez-Pichardo, A., J. Aznar, F. Camacho, M V. Borobio, and E J. Perea. Sexually Transmitted Diseases in Homosexual Males in Seville, Spain. 1991.

MLA citiranje

Rodriguez-Pichardo, A., et al. Sexually Transmitted Diseases in Homosexual Males in Seville, Spain. 1991.