APA

Pfeiffer K. A., Saunders R. P., Brown W. H., Dowda M., Addy C. L. & Pate R. R. (20140121). Study of Health and Activity in Preschool Environments (SHAPES): study protocol for a randomized trial evaluating a multi-component physical activity intervention in preschool children. : BMC public health.

Chicago

Pfeiffer Karin A, Saunders Ruth P, Brown William H, Dowda Marsha, Addy Cheryl L and Pate Russell R. 20140121. Study of Health and Activity in Preschool Environments (SHAPES): study protocol for a randomized trial evaluating a multi-component physical activity intervention in preschool children. : BMC public health.

Harvard

Pfeiffer K. A., Saunders R. P., Brown W. H., Dowda M., Addy C. L. and Pate R. R. (20140121). Study of Health and Activity in Preschool Environments (SHAPES): study protocol for a randomized trial evaluating a multi-component physical activity intervention in preschool children. : BMC public health.

MLA

Pfeiffer Karin A, Saunders Ruth P, Brown William H, Dowda Marsha, Addy Cheryl L and Pate Russell R. Study of Health and Activity in Preschool Environments (SHAPES): study protocol for a randomized trial evaluating a multi-component physical activity intervention in preschool children. : BMC public health. 20140121.