Cita APA

Loffeld, R. J., Tobberingh, E. E., & Arends, J. W. (1992). Serum pepsinogens in blood transfusion donors.

Citación estilo Chicago

Loffeld, R J., E E. Tobberingh, y J W. Arends. Serum Pepsinogens in Blood Transfusion Donors. 1992.

Cita MLA

Loffeld, R J., E E. Tobberingh, y J W. Arends. Serum Pepsinogens in Blood Transfusion Donors. 1992.