Παραπομπή APA

D G Land, E C Bate smith, & R Harper. (1968). Odour description and odour classification. J & A churchill ltd.

Παραπομπή Chicago Style

D G Land, E C Bate smith, και R Harper. Odour Description and Odour Classification. J & A churchill ltd, 1968.

Παραπομπή MLA

D G Land, et al. Odour Description and Odour Classification. J & A churchill ltd, 1968.