Cita APA (7th ed.)

VAN KREVELEN, D. (1961). Coal: Typology chemistry-physics. Elsevier.

Cita Chicago (17th ed.)

VAN KREVELEN, D.W. Coal: Typology Chemistry-physics. Amsterdam: Elsevier, 1961.

Cita MLA (9th ed.)

VAN KREVELEN, D.W. Coal: Typology Chemistry-physics. Elsevier, 1961.