APA

Blinn C. R., Buckner E. R., . (1989). Normal Foliar Nutrient Levels in North American Forest Trees. : .

Chicago

Blinn Charles R, Buckner Edward R, . 1989. Normal Foliar Nutrient Levels in North American Forest Trees. : .

Harvard

Blinn C. R., Buckner E. R., . (1989). Normal Foliar Nutrient Levels in North American Forest Trees. : .

MLA

Blinn Charles R, Buckner Edward R, . Normal Foliar Nutrient Levels in North American Forest Trees. : . 1989.