APA-viite

Collings, G. H. (1955). Commerical fertilizers: Their sources and use (5.). Mc Graw- Hill Book Company Inc.

Chicago-tyylinen lähdeviittaus

Collings, Gilbeart H. Commerical Fertilizers: Their Sources and Use. 5. New York: Mc Graw- Hill Book Company Inc, 1955.

MLA-viite

Collings, Gilbeart H. Commerical Fertilizers: Their Sources and Use. 5. Mc Graw- Hill Book Company Inc, 1955.