Dyfyniad APA

Hornstra, L., Majoor, M., & Peetsma, T. (2017). Achievement goal profiles and developments in effort and achievement in upper elementary school. Br J Educ Psychol.

Dyfyniad Arddull Chicago

Hornstra, Lisette, Marieke Majoor, and Thea Peetsma. "Achievement Goal Profiles and Developments in Effort and Achievement in Upper Elementary School." Br J Educ Psychol 2017.

Dyfyniad MLA

Hornstra, Lisette, Marieke Majoor, and Thea Peetsma. "Achievement Goal Profiles and Developments in Effort and Achievement in Upper Elementary School." Br J Educ Psychol 2017.

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