APA-ийн эшлэл(7 дахь хэвлэлт)

(1977). Remedial education: Programmes and progress ; reader / edited and introduced by Paul Widlake for the National Association for Remedial Education from the journal Remedial Education.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

Remedial Education: Programmes and Progress ; Reader / Edited and Introduced by Paul Widlake for the National Association for Remedial Education from the Journal Remedial Education. 1977.

MLA -ийн эшлэл (9 дэх хэвлэлт)

Remedial Education: Programmes and Progress ; Reader / Edited and Introduced by Paul Widlake for the National Association for Remedial Education from the Journal Remedial Education. 1977.