APA

Pressey R. L., .Ad hoc reservations: foward or backward steps in developing representative reserve systems?. : .

Chicago

Pressey Robert L, .Ad hoc reservations: foward or backward steps in developing representative reserve systems?. : .

Harvard

Pressey R. L., .Ad hoc reservations: foward or backward steps in developing representative reserve systems?. : .

MLA

Pressey Robert L, .: . .