Cita APA (7a ed.)

Robertson, R. (1960). Mineral use guide or Robertson s spiders webs. Cleaver-Hume.

Cita Chicago Style (17a ed.)

Robertson, R.H.S. Mineral Use Guide or Robertson S Spiders Webs. Londres: Cleaver-Hume, 1960.

Cita MLA (8a ed.)

Robertson, R.H.S. Mineral Use Guide or Robertson S Spiders Webs. Cleaver-Hume, 1960.