The Principles of Psychology
[ar] مبادئ علم النفس (كتاب)
[es] Principios de psicología
[et] The Principles of Psychology
[fa] اصول روان‌شناسی
[fr] The Principles of Psychology
[ja] 心理学原理
[ko] 심리학의 원리
[pt] Os Princípios da Psicologia
[sv] Principles of Psychology