Westerkamp C. Christian & Demmelmeuer H. Helmut. (1997). Blattoberflachen mitteleuropaischer Laubgeholze: Leaf Surfaces of Central European Woody Plants. Berlin, s.n., 1997.
Chicagoスタイル(17版)引用形式Westerkamp C. Christian , Demmelmeuer H. Helmut. Blattoberflachen Mitteleuropaischer Laubgeholze: Leaf Surfaces of Central European Woody Plants. Berlin, s.n., 1997, 1997.
MLA(9版)引用形式Westerkamp C. Christian , Demmelmeuer H. Helmut. Blattoberflachen Mitteleuropaischer Laubgeholze: Leaf Surfaces of Central European Woody Plants. Berlin, s.n., 1997, 1997.
警告: この引用は必ずしも正確ではありません.