Gaya APA

SHOJI, S. et al (2006). VOLCANIC ASH SOILS: GENESIS, PROPERTIES, AND UTILIZATION . USA: Library of Congress Cataloging in Publication Data.

Gaya MLA

SHOJI, S.. et al. "VOLCANIC ASH SOILS: GENESIS, PROPERTIES, AND UTILIZATION". USA: Library of Congress Cataloging in Publication Data, 2006. Text.