(1988). Symposium on Land Qualities in Space and Time: Invited papers. Wageningen: Wageningen Agricultural Univ.
استشهاد بنمط شيكاغوSymposium On Land Qualities in Space and Time: Invited Papers. Wageningen: Wageningen Agricultural Univ, 1988.
MLA استشهادSymposium On Land Qualities in Space and Time: Invited Papers. Wageningen: Wageningen Agricultural Univ, 1988.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.