APA

Whittaker R. H., Marks P. L., .Methods of assessing terrestrial productivity. : .

Chicago

Whittaker Robert H, Marks Peter L, .Methods of assessing terrestrial productivity. : .

Harvard

Whittaker R. H., Marks P. L., .Methods of assessing terrestrial productivity. : .

MLA

Whittaker Robert H, Marks Peter L, .: . .