Driessen, p., & Dudal, R. The major soils of the world: Lecture notes on their geography, formation, properties and use.
Chicago Style aipamenaDriessen, páginas:M, and R. Dudal. The Major Soils of the World: Lecture Notes on Their Geography, Formation, Properties and Use.
MLA aipamenaDriessen, páginas:M, and R. Dudal. The Major Soils of the World: Lecture Notes on Their Geography, Formation, Properties and Use.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.