APA
Culpin C., . (1939). Agricultural engineering in North America and Germany...College of Estate Management Reports of the College Travelling Scholars in Agriculture No. 6. London: College of Estate Management.
Chicago
Culpin C, . 1939. Agricultural engineering in North America and Germany...College of Estate Management Reports of the College Travelling Scholars in Agriculture No. 6. London: College of Estate Management.
Harvard
Culpin C., . (1939). Agricultural engineering in North America and Germany...College of Estate Management Reports of the College Travelling Scholars in Agriculture No. 6. London: College of Estate Management.
MLA
Culpin C, . Agricultural engineering in North America and Germany...College of Estate Management Reports of the College Travelling Scholars in Agriculture No. 6. London: College of Estate Management. 1939.
