APA-ийн эшлэл(7 дахь хэвлэлт)

Godfrey, S., Edwards, R., & Warrell, D. (1969). INFLUENCE OF LUNG SHRINKAGE ON BREATH HOLDING TIME.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

Godfrey, S., R. Edwards, ба D. Warrell. INFLUENCE OF LUNG SHRINKAGE ON BREATH HOLDING TIME. 1969.

MLA -ийн эшлэл (9 дэх хэвлэлт)

Godfrey, S., et al. INFLUENCE OF LUNG SHRINKAGE ON BREATH HOLDING TIME. 1969.