Gaya APA

Kostelnik, M, J., L, I, G, M. (2009). Getting it right from the start: the principals guide to early childhood education . California: California: Corwin, 2009.

Gaya MLA

Kostelnik, Marjorie, J., L, I., Grady,, Marilyn. "Getting it right from the start: the principals guide to early childhood education". California: California: Corwin, 2009, 2009. .