Dyfyniad APA

Smith, R. E., & Smoll, F. L. (1978). Psychological perspectives in youth sports. Hemisphere.

Dyfyniad Arddull Chicago

Smith, Ronald E., and Frank L. Smoll. Psychological Perspectives in Youth Sports. Washington: Hemisphere, 1978.

Dyfyniad MLA

Smith, Ronald E., and Frank L. Smoll. Psychological Perspectives in Youth Sports. Hemisphere, 1978.

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