Παραπομπή APA

Smedana, L. K. . .., & Rycroft, D. W. . .. (1983). Land drainage: Planning and design of agricultural drainage systems (1.). Bats ford academic&educational Ltd.

Παραπομπή Chicago Style

Smedana, Lambert K ., και David W. Rycroft. Land Drainage: Planning and Design of Agricultural Drainage Systems. 1. London: Bats ford academic&educational Ltd, 1983.

Παραπομπή MLA

Smedana, Lambert K ., και David W. Rycroft. Land Drainage: Planning and Design of Agricultural Drainage Systems. 1. Bats ford academic&educational Ltd, 1983.