APA

Nixon K. C., .Infrageneric classification of Quercus (<Fagaceae>) and typification of sectional names. : .

Chicago

Nixon K C, .Infrageneric classification of Quercus (<Fagaceae>) and typification of sectional names. : .

Harvard

Nixon K. C., .Infrageneric classification of Quercus (<Fagaceae>) and typification of sectional names. : .

MLA

Nixon K C, .: . .