Cita APA (7a ed.)

Ratto, F., Sbarra, D. E., & Tortosa, R. D. Novelties in senecio from Santa Cruz province, Argentina.

Cita Chicago Style (17a ed.)

Ratto, Francisco, Damián Ezequiel Sbarra, y Roberto Daniel Tortosa. Novelties in Senecio from Santa Cruz Province, Argentina.

Cita MLA (8a ed.)

Ratto, Francisco, et al. Novelties in Senecio from Santa Cruz Province, Argentina.