APA (7th ed.) Citation

Velasco Molina, H. A. (1956). Chemical measurements of phosphorus avialability in some medium to fine textured soils. [publisher not identified].

Chicago Style (17th ed.) Citation

Velasco Molina, Hugo Alejo. Chemical Measurements of Phosphorus Avialability in Some Medium to Fine Textured Soils. [College Station, Tex.]: [publisher not identified], 1956.

MLA (9th ed.) Citation

Velasco Molina, Hugo Alejo. Chemical Measurements of Phosphorus Avialability in Some Medium to Fine Textured Soils. [publisher not identified], 1956.