APA Style

Troeh,R Frederick. (). Soil and Water Conservation for productivity and environmental protection (1st). United Stated of America: United state of Amercia.

Chicago Style

Troeh,R Frederick. Soil and Water Conservation for productivity and environmental protection. 1st United Stated of America: United state of Amercia, . Text.

MLA Style

Troeh,R Frederick. Soil and Water Conservation for productivity and environmental protection. 1st United Stated of America: United state of Amercia, . Text.

Turabian Style

Troeh,R Frederick. Soil and Water Conservation for productivity and environmental protection. 1st United Stated of America: United state of Amercia, . Print.