Παραπομπή σε μορφή APA (7η εκδ.)

Marchant, J. H., Langton, R., & Gregory, R. D. (1995). Evaluation of the waterways bird survey as a monitor of regional and national populations on waterbirds, and an appraisal of its future role. BTO, National Centre for Ornithology.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Marchant, John H., Rowena Langton, και Richard D. Gregory. Evaluation of the Waterways Bird Survey as a Monitor of Regional and National Populations on Waterbirds, and an Appraisal of Its Future Role. Norfolk: BTO, National Centre for Ornithology, 1995.

Παραπομπή σε μορφή MLA (9th εκδ.)

Marchant, John H., et al. Evaluation of the Waterways Bird Survey as a Monitor of Regional and National Populations on Waterbirds, and an Appraisal of Its Future Role. BTO, National Centre for Ornithology, 1995.