Koekoek, R. (1969). The structure of papain: An X-ray diffraction study at 2.8Å resolution. V.R.B.-Offsetdrukkerij.
Chicagoスタイル(17版)引用形式Koekoek, Roelof. The Structure of Papain: An X-ray Diffraction Study at 2.8Å Resolution. Groningen: V.R.B.-Offsetdrukkerij, 1969.
MLA(8版)引用形式Koekoek, Roelof. The Structure of Papain: An X-ray Diffraction Study at 2.8Å Resolution. V.R.B.-Offsetdrukkerij, 1969.
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