APA-ийн эшлэл(7 дахь хэвлэлт)

Alexander, L. G. (1976). Developing skills: An integrated course for intermediate students. Longman.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

Alexander, Louis George. Developing Skills: An Integrated Course for Intermediate Students. Londres: Longman, 1976.

MLA -ийн эшлэл (9 дэх хэвлэлт)

Alexander, Louis George. Developing Skills: An Integrated Course for Intermediate Students. Longman, 1976.