(1970). Ecosystems: Student manual (Trial ed.). Science Curriculum Improvement Study.
Chicago Style (17th ed.) CitationEcosystems: Student Manual. Trial ed. Berkeley, CA: Science Curriculum Improvement Study, 1970.
MLA (9th ed.) CitationEcosystems: Student Manual. Trial ed. Science Curriculum Improvement Study, 1970.
Warning: These citations may not always be 100% accurate.