Cita APA

Mulligan, R. C., & Berg, P. (1981). Selection for animal cells that express the Escherichia coli gene coding for xanthine-guanine phosphoribosyltransferase.

Chicago Style Citation

Mulligan, R C., i P. Berg. Selection for Animal Cells That Express the Escherichia Coli Gene Coding for Xanthine-guanine Phosphoribosyltransferase. 1981.

Cita MLA

Mulligan, R C., i P. Berg. Selection for Animal Cells That Express the Escherichia Coli Gene Coding for Xanthine-guanine Phosphoribosyltransferase. 1981.

Atenció: Aquestes cites poden no estar 100% correctes.