Koehler, K. M. (1988). Development and validation of a questionnaire for assessing habitual physical activity of sixth-grade students. [publisher not identified].
Chicago Style (17th ed.) CitationKoehler, Karen M. Development and Validation of a Questionnaire for Assessing Habitual Physical Activity of Sixth-grade Students. [Place of publication not identified]: [publisher not identified], 1988.
MLA (9th ed.) CitationKoehler, Karen M. Development and Validation of a Questionnaire for Assessing Habitual Physical Activity of Sixth-grade Students. [publisher not identified], 1988.
Warning: These citations may not always be 100% accurate.