एपीए उद्धरण

Estes, L. S. (1999). Observation guide for Driscoll and Nagel, early childhood education, birth-8. Boston: Allyn and Bacon.

शिकागो स्टाइल उद्धरण

Estes, Linda S. Observation Guide for Driscoll and Nagel, Early Childhood Education, Birth-8. Boston: Allyn and Bacon, 1999.

एमएलए उद्धरण

Estes, Linda S. Observation Guide for Driscoll and Nagel, Early Childhood Education, Birth-8. Boston: Allyn and Bacon, 1999.