APA (7 ম সংস্করণ) উদ্ধৃতি

Harpen, N. H. v., & Watkins, S. J. (1930). The electrometric determination of the hydrogen ion concentration in the latex of Hevea brasiliensis and its applicability to technical problems. Varekamp & Co.

শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতি

Harpen, Nicolaas Hendrik van, এবং S. J. Watkins. The Electrometric Determination of the Hydrogen Ion Concentration in the Latex of Hevea Brasiliensis and Its Applicability to Technical Problems. Medan: Varekamp & Co, 1930.

M.L.A (8 ম সংস্করণ) উদ্ধৃতি

Harpen, Nicolaas Hendrik van, এবং S. J. Watkins. The Electrometric Determination of the Hydrogen Ion Concentration in the Latex of Hevea Brasiliensis and Its Applicability to Technical Problems. Varekamp & Co, 1930.