APA

Sjögren P., .Extinction and isolation gradients in metapopulations: the case of the pool frog (<rana Lessonae>). : .

Chicago

Sjögren Per, .Extinction and isolation gradients in metapopulations: the case of the pool frog (<rana Lessonae>). : .

Harvard

Sjögren P., .Extinction and isolation gradients in metapopulations: the case of the pool frog (<rana Lessonae>). : .

MLA

Sjögren Per, .: . .