APA (7th ed.) Citation

(1969). Communities: Teacher's guide (Trial ed.). Science Curriculum Improvement Study.

Chicago Style (17th ed.) Citation

Communities: Teacher's Guide. Trial ed. Berkeley, CA: Science Curriculum Improvement Study, 1969.

MLA (9th ed.) Citation

Communities: Teacher's Guide. Trial ed. Science Curriculum Improvement Study, 1969.

Advarsel: Disse citationer er muligvist ikke 100% nøjagtige.