Hulshoff Pol, L. (1989). The phenomenon of granulation of anaerobic sludge. Landbouwuniversiteit te Wageningen?.
Chicagoスタイル(17版)引用形式Hulshoff Pol, Look. The Phenomenon of Granulation of Anaerobic Sludge. [Wageningen, The Netherlands?: Landbouwuniversiteit te Wageningen?, 1989.
MLA(8版)引用形式Hulshoff Pol, Look. The Phenomenon of Granulation of Anaerobic Sludge. Landbouwuniversiteit te Wageningen?, 1989.
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