Gaya APA

SPORN, M, B., ROBERTS, A, B. (1991). Peptide growth factors and their receptors II . New York: Springer-Verlag.

Gaya MLA

SPORN, Michael, B.., ROBERTS, Anita, B.. "Peptide growth factors and their receptors II". New York: Springer-Verlag, 1991. Text.