APA-viite (7. p.)
O'SULLIVAN, P., & ET AL. (1988). CATEGORICAL SPECIAL EDUCATION TEACHER CERTIFICATION: DOES IT AFFECT INSTRUCTION OF MILDLY HANDICAPPED PUPILS?
Chicago-viite (17. p.)
O'SULLIVAN, P.J, ja ET AL. CATEGORICAL SPECIAL EDUCATION TEACHER CERTIFICATION: DOES IT AFFECT INSTRUCTION OF MILDLY HANDICAPPED PUPILS? 1988.
MLA-viite (9. p.)
O'SULLIVAN, P.J, ja ET AL. CATEGORICAL SPECIAL EDUCATION TEACHER CERTIFICATION: DOES IT AFFECT INSTRUCTION OF MILDLY HANDICAPPED PUPILS? 1988.
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