APA-referens (7:e uppl.)

williams,richard tecwyn,ed. (1955). the biochemistry of vitamin b12,a symposium held at the london school of hygiene and tropical williams,richard tecwyn(ed.).

Chicago-referens (17:e uppl.)

williams,richard tecwyn,ed. The Biochemistry of Vitamin B12,a Symposium Held at the London School of Hygiene and Tropical Williams,richard Tecwyn(ed.). 1st.ed. | .London Cambridge University, 1955.

MLA-referens (9:e uppl.)

williams,richard tecwyn,ed. The Biochemistry of Vitamin B12,a Symposium Held at the London School of Hygiene and Tropical Williams,richard Tecwyn(ed.). 1955.