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Lund University

Reference guide for APA 7th edition

Reference guide for APA 7th edition intended for students at the department of Biology and CEC, Lund University. NB! If you access the guide using a smartphone, please note that the text will open below the menu.

Same author and date

Same author and date

If you are citing several works published by the same author in the same year, use lower case letter directly after the year to separate them. The same year-letter combination is used in both the in-text reference and the reference list.


In-text reference  
(Ljungberg, 2002a2002b)                                                                                                                      Ljungberg has investigated the habitat needs of threatened ground living beetle species in Sweden (2002a2002b)…
Reference list

​Ljungberg, H. (2002a). Bete, störning och biologisk mångfald i odlingslandskapet: Hotade skalbaggar i öländska torrmarker [Grazing, disturbance and biodiversity: Threatened beetles in the drylands of Öland] (Meddelande No. 2002:20). Länsstyrelsen Kalmar län.

Ljungberg, H. (2002b). Våra rödlistade jordlöpares habitatkrav [Important habitats for red-listed ground beetles in Sweden]. Entomologisk tidskrift, 123(4), 167-185.