APA

H.-D. Behnke R.D. Sjolund, .Sieve Elements Comparative Structure, Induction and Development. : .

Chicago

H.-D. Behnke R.D. Sjolund, .Sieve Elements Comparative Structure, Induction and Development. : .

Harvard

H.-D. Behnke R.D. Sjolund, .Sieve Elements Comparative Structure, Induction and Development. : .

MLA

H.-D. Behnke R.D. Sjolund, .: . .