(2016). The effect of Thelin model in the collection of material Biology and retention of first year students Average. , 2(217), 339-364.
. "The effect of Thelin model in the collection of material Biology and retention of first year students Average". , 2, 217, 2016, 339-364.
(2016). 'The effect of Thelin model in the collection of material Biology and retention of first year students Average', , 2(217), pp. 339-364.
The effect of Thelin model in the collection of material Biology and retention of first year students Average. , 2016; 2(217): 339-364.