APA

Benson R. H., Chapman R. E., .On the measurement of morphology and its change. : .

Chicago

Benson Richard H, Chapman Ralph E, .On the measurement of morphology and its change. : .

Harvard

Benson R. H., Chapman R. E., .On the measurement of morphology and its change. : .

MLA

Benson Richard H, Chapman Ralph E, .: . .