APA

Janzen D. H., .Seed and pollen dispersal by animals: convergence in the ecology of contamination and sloppy harvest. : .

Chicago

Janzen Daniel H, .Seed and pollen dispersal by animals: convergence in the ecology of contamination and sloppy harvest. : .

Harvard

Janzen D. H., .Seed and pollen dispersal by animals: convergence in the ecology of contamination and sloppy harvest. : .

MLA

Janzen Daniel H, .: . .