Parker, B. M. (1952). Science experiences: Elementary school. Row, Peterson.
Citazione stile Chigago Style (17a edizione)Parker, Bertha Morris. Science Experiences: Elementary School. Evanston, Ill: Row, Peterson, 1952.
Citatione MLA (9a ed.)Parker, Bertha Morris. Science Experiences: Elementary School. Row, Peterson, 1952.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.