Platt's Oilgram Price Service & National Petroleum News. (1940). Platt's oil price handbook. Platt's Price Service.
Chicago Style (17th ed.) CitationPlatt's Oilgram Price Service and National Petroleum News. Platt's Oil Price Handbook. Cleveland: Platt's Price Service, 1940.
MLA (9th ed.) CitationPlatt's Oilgram Price Service and National Petroleum News. Platt's Oil Price Handbook. Platt's Price Service, 1940.
Warning: These citations may not always be 100% accurate.