Cita APA (7th ed.)

Hughes, R. E., & Milner, C. (1970). Methods for the measurement of the primary production of grassland. Blackwell Scientific Publications.

Cita Chicago (17th ed.)

Hughes, R Elfyn, i C. Milner. Methods for the Measurement of the Primary Production of Grassland. Oxford: Blackwell Scientific Publications, 1970.

Cita MLA (9th ed.)

Hughes, R Elfyn, i C. Milner. Methods for the Measurement of the Primary Production of Grassland. Blackwell Scientific Publications, 1970.