APA Edition Citation

Collings, G. H. (1955). Commercial fetilizers their sources and use (Ed.5.).

Chicago Edition Citation

Collings, Gilbert H. Commercial Fetilizers Their Sources and Use. Ed.5. 1955.

MLA Edition Citation

Collings, Gilbert H. Commercial Fetilizers Their Sources and Use. Ed.5. 1955.

Warning: These citations may not always be 100% accurate.