APA Цитирование

Soil survey staff. (1990). Keys to soil taxonomy. Blacksburg, Va: Virginia Polytechnic Institute and State University.

Chicago-стиль цитирования

Soil survey staff. Keys to Soil Taxonomy. Blacksburg, Va: Virginia Polytechnic Institute and State University, 1990.

MLA-цитирование

Soil survey staff. Keys to Soil Taxonomy. Blacksburg, Va: Virginia Polytechnic Institute and State University, 1990.

Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.