Tom Nicolaas Ligthart. (1996). Development of earthworm burrow systems and the influence of earthworms on soil hydrology. Wageningen: Landbouwuniversitei te Wageningen.
استشهاد بنمط شيكاغوTom Nicolaas Ligthart. Development of Earthworm Burrow Systems and the Influence of Earthworms On Soil Hydrology. Wageningen: Landbouwuniversitei te Wageningen, 1996.
MLA استشهادTom Nicolaas Ligthart. Development of Earthworm Burrow Systems and the Influence of Earthworms On Soil Hydrology. Wageningen: Landbouwuniversitei te Wageningen, 1996.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.