APA-ийн эшлэл(7 дахь хэвлэлт)

Gosler, A., Gosler, A., & Perrins, C. (1987). Some aspects of bill morphology in relation to ecology in the great tit Parus major.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

Gosler, A., Andrew Gosler, ба C. Perrins. Some Aspects of Bill Morphology in Relation to Ecology in the Great Tit Parus Major. 1987.

MLA -ийн эшлэл (9 дэх хэвлэлт)

Gosler, A., et al. Some Aspects of Bill Morphology in Relation to Ecology in the Great Tit Parus Major. 1987.