Denman, D. R., Switzer, J. F. Q., & Sawyer, O. H. M. (1958). Bibliography of rural land economy and landownership 1900-1957: A full list of works relating to the British Isles and selected works from the United States and Western Europe. [s.l.]: Cambridge University. Department of Estate Management.

Denman, Donald Robert, J. F. Q. Switzer, and O. H. M. Sawyer. Bibliography of Rural Land Economy and Landownership 1900-1957: A Full List of Works Relating to the British Isles and Selected Works From the United States and Western Europe. [s.l.]: Cambridge University. Department of Estate Management, 1958.

Denman, Donald Robert, J. F. Q. Switzer, and O. H. M. Sawyer. Bibliography of Rural Land Economy and Landownership 1900-1957: A Full List of Works Relating to the British Isles and Selected Works From the United States and Western Europe. [s.l.]: Cambridge University. Department of Estate Management, 1958.