APA

Koptur S., Baker H. G., Frankie G. W. & Haber W. A.Phenological studies of shrub and treelet species in tropical cloud forests of Costa Rica. : .

Chicago

Koptur Suzanne, Baker Herbert G, Frankie Gordon W and Haber William A.Phenological studies of shrub and treelet species in tropical cloud forests of Costa Rica. : .

Harvard

Koptur S., Baker H. G., Frankie G. W. and Haber W. A.Phenological studies of shrub and treelet species in tropical cloud forests of Costa Rica. : .

MLA

Koptur Suzanne, Baker Herbert G, Frankie Gordon W and Haber William A.: . .