APA citiranje

Raper, C. G., & Johnson, E. (1976). Letter: Heparin in intravenous fluids.

Citação norma Chicago

Raper, C G., and E. Johnson. Letter: Heparin in Intravenous Fluids. 1976.

MLA citiranje

Raper, C G., and E. Johnson. Letter: Heparin in Intravenous Fluids. 1976.

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