Dyfyniad APA

Nelson, N. M., Foley, E., O'Gorman, D. J., Moyna, N. M., & Woods, C. B. (2008). Active commuting to school: How far is too far? BioMed Central.

Dyfyniad Arddull Chicago

Nelson, Norah M., Eimear Foley, Donal J. O'Gorman, Niall M. Moyna, and Catherine B. Woods. Active Commuting to School: How Far Is Too Far? BioMed Central, 2008.

Dyfyniad MLA

Nelson, Norah M., et al. Active Commuting to School: How Far Is Too Far? BioMed Central, 2008.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.