Annen, H. (2023). Positive Psychology in the Military. Peter Lang International Academic Publishers.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रAnnen, Hubert. Positive Psychology in the Military. Bern: Peter Lang International Academic Publishers, 2023.
एमएलए (9वां संस्करण) प्रशस्ति पत्रAnnen, Hubert. Positive Psychology in the Military. Peter Lang International Academic Publishers, 2023.
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