APA (7th ed.) Citation
Marquina Frei, S. R. (1981). Geriatrics (1a ed.). Sepo S.A..
Chicago Style (17th ed.) Citation
Marquina Frei, Sergio Ricardo. Geriatrics. 1a ed. Buenos Aires: Sepo S.A., 1981.
MLA (9th ed.) Citation
Marquina Frei, Sergio Ricardo. Geriatrics. 1a ed. Sepo S.A., 1981.
Warning: These citations may not always be 100% accurate.