APA

Wrigh S. F., Upadhyaya A., . (1998). A survey of soils for aggregate stability and glomalin, a glycoprotein produced by hyphae of arbuscular mycorrhizal fungi [PDF]. New York: Kluwer Academic.

Chicago

Wrigh S F, Upadhyaya A, . 1998. A survey of soils for aggregate stability and glomalin, a glycoprotein produced by hyphae of arbuscular mycorrhizal fungi [PDF]. New York: Kluwer Academic.

Harvard

Wrigh S. F., Upadhyaya A., . (1998). A survey of soils for aggregate stability and glomalin, a glycoprotein produced by hyphae of arbuscular mycorrhizal fungi [PDF]. New York: Kluwer Academic.

MLA

Wrigh S F, Upadhyaya A, . A survey of soils for aggregate stability and glomalin, a glycoprotein produced by hyphae of arbuscular mycorrhizal fungi [PDF]. New York: Kluwer Academic. 1998.