Cita APA (7th ed.)
Head, K. H. (1994). Manual of soil laboratory testing (3nd ed.). Pentech Press.
Cita Chicago (17th ed.)
Head, K. H. Manual of Soil Laboratory Testing. 3nd ed. London: Pentech Press, 1994.
Cita MLA (9th ed.)
Head, K. H. Manual of Soil Laboratory Testing. 3nd ed. Pentech Press, 1994.
Atenció: Aquestes cites poden no estar 100% correctes.