Gaya APA

Billman, J., Janice, I, H. (2003). Observation and participation in early childhood settings a practicum ì guide . Boston: Boston: Allyn and Bacon; 2003.

Gaya MLA

Billman, Jean., Janice, I., Herman,. "Observation and participation in early childhood settings a practicum ì guide". Boston: Boston: Allyn and Bacon; 2003, 2003. Text.