Citace podle APA (7th ed.)
Bünning, E. (1989). Ahead of his time, Wilhelm Pfeffer: Early advances in plant biology. Carleton University Press.
Citace podle Chicago (17th ed.)
Bünning, Erwin. Ahead of His Time, Wilhelm Pfeffer: Early Advances in Plant Biology. Ottawa, Canada: Carleton University Press, 1989.
Citace podle MLA (9th ed.)
Bünning, Erwin. Ahead of His Time, Wilhelm Pfeffer: Early Advances in Plant Biology. Carleton University Press, 1989.
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