APA (7th ed.) Citation

Porcupine United Gold Mines, Ltd, & Vary, R. A. (1931). Amalgamation practice at Porcupine United Gold Mines, Limited, Timmins, Ont. [publisher not identified].

Chicago Style (17th ed.) Citation

Porcupine United Gold Mines, Ltd, and Ronald A. Vary. Amalgamation Practice at Porcupine United Gold Mines, Limited, Timmins, Ont. Washington, D.C.: [publisher not identified], 1931.

MLA (9th ed.) Citation

Porcupine United Gold Mines, Ltd, and Ronald A. Vary. Amalgamation Practice at Porcupine United Gold Mines, Limited, Timmins, Ont. [publisher not identified], 1931.