APA-ийн эшлэл(7 дахь хэвлэлт)

Heap, G. (1992). Structures approach to systems development. McGraw-Hill.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

Heap, Gary. Structures Approach to Systems Development. London: McGraw-Hill, 1992.

MLA -ийн эшлэл (9 дэх хэвлэлт)

Heap, Gary. Structures Approach to Systems Development. McGraw-Hill, 1992.